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Vulnerability Details :

CVE-2026-4684

Summary
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At-24 Mar, 2026 | 12:30
Updated At-15 Jul, 2026 | 00:50
Rejected At-
Credits

Race condition, use-after-free in the Graphics: WebRender component

Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mozilla
Assigner Org ID:f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At:24 Mar, 2026 | 12:30
Updated At:15 Jul, 2026 | 00:50
Rejected At:
â–¼CVE Numbering Authority (CNA)
Race condition, use-after-free in the Graphics: WebRender component

Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Unaffected
  • From 115.34 through 115.* (rpm)
  • From 140.9 through 140.* (rpm)
  • From 149 through * (rpm)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Unaffected
  • From 140.9 through 140.* (rpm)
  • From 149 through * (rpm)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Oskar L
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2011129
N/A
https://www.mozilla.org/security/advisories/mfsa2026-20/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-21/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-22/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-23/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-24/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2011129
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-20/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-21/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-22/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-23/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-24/
Resource: N/A
â–¼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-416CWE-416 Use After Free
CWECWE-362CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Type: CWE
CWE ID: CWE-416
Description: CWE-416 Use After Free
Type: CWE
CWE ID: CWE-362
Description: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
2. firefox: thunderbird: Race condition, use-after-free in the Graphics: WebRender component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Race condition, use-after-free in the Graphics: WebRender component

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
Collection URL
https://catalog.redhat.com/software/containers/
Package Name
firefox
CPEs
  • cpe:/o:redhat:enterprise_linux:10.1
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el10_1 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
Collection URL
https://catalog.redhat.com/software/containers/
Package Name
thunderbird
CPEs
  • cpe:/o:redhat:enterprise_linux:10.1
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el10_1 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10.0 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/o:redhat:enterprise_linux_eus:10.0
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el10_0 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10.0 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/o:redhat:enterprise_linux_eus:10.0
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el10_0 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/o:redhat:rhel_els:7
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el7_9 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:enterprise_linux:8
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:enterprise_linux:8
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.2 Advanced Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_aus:8.2
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_2 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.2 Advanced Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_aus:8.2
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_2 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_aus:8.4
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_4 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_aus:8.4
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_4 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_eus_long_life:8.4
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_4 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_eus_long_life:8.4
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_4 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_aus:8.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_aus:8.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_tus:8.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_tus:8.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_e4s:8.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_e4s:8.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_tus:8.8
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_8 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_tus:8.8
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_8 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_e4s:8.8
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_8 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_e4s:8.8
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el8_8 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:enterprise_linux:9
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_7 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:enterprise_linux:9
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_7 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_e4s:9.0
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_0 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_e4s:9.0
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_0 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_e4s:9.2
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_2 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_e4s:9.2
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_2 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.4 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_eus:9.4
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_4 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.4 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_eus:9.4
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_4 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.6 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/a:redhat:rhel_eus:9.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.6 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/a:redhat:rhel_eus:9.6
Default Status
affected
Versions
Unaffected
  • From 0:140.9.0-1.el9_6 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhel10/firefox-flatpak
CPEs
  • cpe:/o:redhat:enterprise_linux:10
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhel10/thunderbird-flatpak
CPEs
  • cpe:/o:redhat:enterprise_linux:10
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 6
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
firefox
CPEs
  • cpe:/o:redhat:enterprise_linux:6
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 6
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/o:redhat:enterprise_linux:6
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
thunderbird
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unknown
Problem Types
TypeCWE IDDescription
CWECWE-364Signal Handler Race Condition
Type: CWE
CWE ID: CWE-364
Description: Signal Handler Race Condition
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Metrics Other Info
Red Hat severity rating
value:
Important
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

RHSA-2026:8427: Red Hat Enterprise Linux Server (v. 7 ELS)

RHSA-2026:7843: Red Hat Enterprise Linux AppStream EUS (v. 10.0)

RHSA-2026:8315: Red Hat Enterprise Linux AppStream EUS (v. 10.0)

RHSA-2026:5931: Red Hat Enterprise Linux AppStream (v. 10)

RHSA-2026:6342: Red Hat Enterprise Linux AppStream (v. 10)

RHSA-2026:5932: Red Hat Enterprise Linux AppStream (v. 8)

RHSA-2026:6917: Red Hat Enterprise Linux AppStream (v. 8)

RHSA-2026:7840: Red Hat Enterprise Linux AppStream AUS (v. 8.2)

RHSA-2026:8285: Red Hat Enterprise Linux AppStream AUS (v. 8.2)

RHSA-2026:7858: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)

RHSA-2026:8850: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)

RHSA-2026:7842: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6)

RHSA-2026:8289: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6)

RHSA-2026:7838: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)

RHSA-2026:8288: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)

RHSA-2026:7839: Red Hat Enterprise Linux AppStream E4S (v.9.0)

RHSA-2026:8286: Red Hat Enterprise Linux AppStream E4S (v.9.0)

RHSA-2026:7841: Red Hat Enterprise Linux AppStream E4S (v.9.2)

RHSA-2026:8287: Red Hat Enterprise Linux AppStream E4S (v.9.2)

RHSA-2026:7845: Red Hat Enterprise Linux AppStream EUS (v.9.4)

RHSA-2026:8290: Red Hat Enterprise Linux AppStream EUS (v.9.4)

RHSA-2026:7837: Red Hat Enterprise Linux AppStream EUS (v.9.6)

RHSA-2026:8284: Red Hat Enterprise Linux AppStream EUS (v.9.6)

RHSA-2026:5930: Red Hat Enterprise Linux AppStream (v. 9)

RHSA-2026:6188: Red Hat Enterprise Linux AppStream (v. 9)

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Reported to Red Hat.2026-03-24 13:01:57
Made public.2026-03-24 12:30:20
Event: Reported to Red Hat.
Date: 2026-03-24 13:01:57
Event: Made public.
Date: 2026-03-24 12:30:20
Replaced By

Rejected Reason

References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-4684
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2450721
issue-tracking
x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4684.json
x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:8427
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7843
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8315
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5931
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6342
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5932
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6917
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7840
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8285
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7858
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8850
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7842
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8289
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7838
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8288
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7839
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8286
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7841
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8287
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7845
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8290
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7837
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8284
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5930
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6188
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-4684
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2450721
Resource:
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x_refsource_REDHAT
Hyperlink: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4684.json
Resource:
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Hyperlink: https://access.redhat.com/errata/RHSA-2026:8427
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8315
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vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:5931
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:6342
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x_refsource_REDHAT
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7842
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8289
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7838
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8288
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7839
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8290
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vendor-advisory
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Hyperlink: https://access.redhat.com/errata/RHSA-2026:7837
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Hyperlink: https://access.redhat.com/errata/RHSA-2026:5930
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x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:6188
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x_refsource_REDHAT
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@mozilla.org
Published At:24 Mar, 2026 | 13:16
Updated At:15 Jul, 2026 | 02:22

Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
N/A
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

Mozilla Corporation
mozilla
>>firefox>>Versions before 115.34.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions before 149.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions from 128.0(inclusive) to 140.9.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Weaknesses
CWE IDTypeSource
CWE-362Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-416Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-364Secondary0b0ca135-0b70-47e7-9f44-1890c2a1c46c
CWE ID: CWE-362
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-416
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-364
Type: Secondary
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2011129security@mozilla.org
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-20/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-21/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-22/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-23/security@mozilla.org
N/A
https://www.mozilla.org/security/advisories/mfsa2026-24/security@mozilla.org
N/A
https://access.redhat.com/errata/RHSA-2026:59300b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:59310b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:59320b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:61880b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:63420b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:69170b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78370b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78380b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78390b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78400b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78410b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78420b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78430b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78450b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:78580b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82840b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82850b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82860b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82870b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82880b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82890b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:82900b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:83150b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:84270b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/errata/RHSA-2026:88500b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://access.redhat.com/security/cve/CVE-2026-46840b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://bugzilla.redhat.com/show_bug.cgi?id=24507210b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4684.json0b0ca135-0b70-47e7-9f44-1890c2a1c46c
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2011129
Source: security@mozilla.org
Resource:
Permissions Required
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-20/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-21/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-22/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-23/
Source: security@mozilla.org
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-24/
Source: security@mozilla.org
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:5930
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:5931
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:5932
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:6188
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:6342
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:6917
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7837
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7838
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7839
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7840
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7841
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7842
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7843
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7845
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:7858
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8284
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8285
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8286
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8287
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8288
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8289
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8290
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8315
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8427
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:8850
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-4684
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2450721
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A
Hyperlink: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4684.json
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Resource: N/A

Change History

0
Information is not available yet

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||
7 Day CHG~0.00%
Published-13 Jan, 2026 | 13:30
Updated-15 Jul, 2026 | 02:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Sandbox escape due to integer overflow in the Graphics component

Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-190
Integer Overflow or Wraparound
CVE-2026-0881
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-10||CRITICAL
EPSS-0.31% / 22.88%
||
7 Day CHG~0.00%
Published-13 Jan, 2026 | 13:30
Updated-15 Jul, 2026 | 02:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Sandbox escape in the Messaging System component

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 8Red Hat Enterprise Linux 10
CWE ID-CWE-284
Improper Access Control
CWE ID-CWE-693
Protection Mechanism Failure
CVE-2026-0891
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-0.41% / 33.96%
||
7 Day CHG~0.00%
Published-13 Jan, 2026 | 13:30
Updated-15 Jul, 2026 | 02:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2026-8389
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.33% / 25.56%
||
7 Day CHG~0.00%
Published-12 May, 2026 | 12:36
Updated-15 Jul, 2026 | 02:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
JIT miscompilation in the JavaScript Engine: JIT component

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-firefoxFirefoxRed Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 8Red Hat Enterprise Linux 10
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE ID-CWE-686
Function Call With Incorrect Argument Type
CWE ID-CWE-733
Compiler Optimization Removal or Modification of Security-critical Code
CWE ID-CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
CVE-2026-8388
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-6.5||MEDIUM
EPSS-0.24% / 15.68%
||
7 Day CHG~0.00%
Published-12 May, 2026 | 12:36
Updated-15 Jul, 2026 | 02:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect boundary conditions in the JavaScript Engine: JIT component

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-firefoxThunderbirdFirefoxRed Hat Enterprise Linux 7Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 6Red Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE ID-CWE-787
Out-of-bounds Write
CVE-2026-6748
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.40% / 32.53%
||
7 Day CHG~0.00%
Published-21 Apr, 2026 | 12:40
Updated-15 Jul, 2026 | 02:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Uninitialized memory in the Audio/Video: Web Codecs component

Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-457
Use of Uninitialized Variable
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2026-6751
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.3||HIGH
EPSS-0.31% / 22.94%
||
7 Day CHG~0.00%
Published-21 Apr, 2026 | 12:40
Updated-15 Jul, 2026 | 01:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Uninitialized memory in the Audio/Video: Web Codecs component

Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-457
Use of Uninitialized Variable
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2026-7320
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.32% / 24.73%
||
7 Day CHG~0.00%
Published-28 Apr, 2026 | 13:49
Updated-15 Jul, 2026 | 01:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Information disclosure due to incorrect boundary conditions in the Audio/Video component

Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 7Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE ID-CWE-125
Out-of-bounds Read
CVE-2024-6604
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.54% / 42.18%
||
7 Day CHG~0.00%
Published-09 Jul, 2024 | 14:25
Updated-30 Oct, 2025 | 16:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bugs fixed in Firefox 128, Firefox ESR 115.13, Thunderbird 128, and Thunderbird 115.13

Memory safety bugs present in Firefox 127, Firefox ESR 115.12, and Thunderbird 115.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxFirefoxFirefox ESRThunderbird
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE-2026-6752
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.3||HIGH
EPSS-0.31% / 22.91%
||
7 Day CHG~0.00%
Published-21 Apr, 2026 | 12:40
Updated-15 Jul, 2026 | 02:47
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect boundary conditions in the WebRTC component

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE ID-CWE-131
Incorrect Calculation of Buffer Size
CVE-2026-6749
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.40% / 33.01%
||
7 Day CHG~0.00%
Published-21 Apr, 2026 | 12:40
Updated-15 Jul, 2026 | 02:47
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Information disclosure due to uninitialized memory in the Graphics: Canvas2D component

Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-824
Access of Uninitialized Pointer
CWE ID-CWE-908
Use of Uninitialized Resource
CVE-2026-6753
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.3||HIGH
EPSS-0.31% / 22.91%
||
7 Day CHG~0.00%
Published-21 Apr, 2026 | 12:40
Updated-15 Jul, 2026 | 01:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect boundary conditions in the WebRTC component

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE ID-CWE-787
Out-of-bounds Write
CVE-2022-26387
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.66% / 47.69%
||
7 Day CHG~0.00%
Published-22 Dec, 2022 | 00:00
Updated-15 Apr, 2025 | 21:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefox_esrthunderbirdfirefoxThunderbirdFirefox ESRFirefox
CWE ID-CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition
CVE-2025-1937
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.52% / 41.05%
||
7 Day CHG~0.00%
Published-04 Mar, 2025 | 13:31
Updated-13 Apr, 2026 | 15:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8

Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-1260
Improper Handling of Overlap Between Protected Memory Ranges
CVE-2025-13016
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.45% / 36.72%
||
7 Day CHG~0.00%
Published-11 Nov, 2025 | 15:47
Updated-13 Apr, 2026 | 15:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect boundary conditions in the JavaScript: WebAssembly component

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxThunderbirdFirefox
CWE ID-CWE-703
Improper Check or Handling of Exceptional Conditions
CVE-2026-4721
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.42% / 34.78%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-15 Jul, 2026 | 02:22
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bugs fixed in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149

Memory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-4698
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.76% / 51.34%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-15 Jul, 2026 | 02:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
JIT miscompilation in the JavaScript Engine: JIT component

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-firefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-733
Compiler Optimization Removal or Modification of Security-critical Code
CWE ID-CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
CVE-2026-4700
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.46% / 37.35%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-15 Jul, 2026 | 02:22
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Mitigation bypass in the Networking: HTTP component

Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-firefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-288
Authentication Bypass Using an Alternate Path or Channel
CWE ID-CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CVE-2026-4720
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.42% / 34.78%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-15 Jul, 2026 | 02:22
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bugs fixed in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149

Memory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE-2026-41523
Matching Score-8
Assigner-GitHub, Inc.
ShareView Details
Matching Score-8
Assigner-GitHub, Inc.
CVSS Score-7.5||HIGH
EPSS-0.75% / 51.04%
||
7 Day CHG+0.26%
Published-22 Jun, 2026 | 22:18
Updated-22 Jul, 2026 | 12:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
vLLM: Security Check Bypass via assert Statement in Activation Function Loading Allows Arbitrary Code Execution

vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.0, an assert-based security check in vLLM's activation function loading allows any unauthenticated attacker to achieve arbitrary code execution on the server by publishing a malicious HuggingFace model, when vLLM runs in Python optimized mode (python -O or PYTHONOPTIMIZE=1). This vulnerability is fixed in 0.22.0.

Action-Not Available
Vendor-vllmvllm-projectRed Hat, Inc.
Product-vllmvllmRed Hat AI Inference Server 3.2Red Hat AI Inference ServerRed Hat OpenShift AI (RHOAI)Red Hat Enterprise Linux AI (RHEL AI) 3
CWE ID-CWE-617
Reachable Assertion
CWE ID-CWE-94
Improper Control of Generation of Code ('Code Injection')
CVE-2026-35385
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.61% / 45.70%
||
7 Day CHG+0.19%
Published-02 Apr, 2026 | 16:30
Updated-24 Jul, 2026 | 21:10
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).

Action-Not Available
Vendor-OpenBSDRed Hat, Inc.
Product-opensshOpenSSHRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat OpenShift Container Platform 4.17Red Hat OpenShift Container Platform 4.18Red Hat AI Inference Server 3.3Red Hat Enterprise Linux 10Multicluster Engine for KubernetesOpenShift PipelinesRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Advanced Cluster Management for Kubernetes 2Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat OpenShift Container Platform 4.15Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat OpenShift Container Platform 4.19Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat OpenShift Container Platform 4.14Red Hat Enterprise Linux 9Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat AI Inference Server 3.2Red Hat Update Infrastructure 5Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat OpenShift Container Platform 4.12Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat OpenShift Container Platform 4.13Red Hat Discovery 2Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRed Hat Enterprise Linux 10.0 Extended Update SupportRed Hat OpenShift Container Platform 4.16
CWE ID-CWE-281
Improper Preservation of Permissions
CVE-2026-2759
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.40% / 32.20%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:32
Updated-15 Jul, 2026 | 02:49
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect boundary conditions in the Graphics: ImageLib component

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-1384
Improper Handling of Physical or Environmental Conditions
CVE-2026-2773
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.60% / 45.11%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
Updated-15 Jul, 2026 | 02:19
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect boundary conditions in the Web Audio component

Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2026-2776
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-10||CRITICAL
EPSS-0.48% / 38.89%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
Updated-15 Jul, 2026 | 02:19
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software

Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefoxRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 9Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 10.0 Extended Update Support
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2026-2794
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-6.5||MEDIUM
EPSS-0.25% / 16.79%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
Updated-15 Jul, 2026 | 02:19
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android

Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 148.

Action-Not Available
Vendor-Red Hat, Inc.Mozilla Corporation
Product-firefoxFirefoxRed Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 8Red Hat Enterprise Linux 10
CWE ID-CWE-908
Use of Uninitialized Resource
CVE-2024-3852
Matching Score-8
Assigner-Mozilla Corporation
ShareView Details
Matching Score-8
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.62% / 46.17%
||
7 Day CHG~0.00%
Published-16 Apr, 2024 | 15:14
Updated-01 Apr, 2025 | 13:39
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

GetBoundName could return the wrong version of an object when JIT optimizations were applied. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxFirefoxFirefox ESRThunderbirdfirefoxthunderbirdfirefox_esr
CWE ID-CWE-386
Symbolic Name not Mapping to Correct Object
CVE-2016-9899
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-21.40% / 97.35%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-25 Nov, 2025 | 17:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxenterprise_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_server_eusenterprise_linux_workstationenterprise_linux_server_ausFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CVE-2026-50263
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-5.5||MEDIUM
EPSS-0.14% / 3.87%
||
7 Day CHG~0.00%
Published-05 Jun, 2026 | 10:36
Updated-27 Jul, 2026 | 10:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.

Action-Not Available
Vendor-X.Org FoundationRed Hat, Inc.
Product-xwaylandx_serverenterprise_linuxRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 9Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 10Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions
CWE ID-CWE-416
Use After Free
CVE-2026-8953
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.6||CRITICAL
EPSS-0.53% / 41.80%
||
7 Day CHG~0.00%
Published-19 May, 2026 | 12:29
Updated-22 Jul, 2026 | 19:19
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Sandbox escape due to use-after-free in the Disability Access APIs component

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2004-2659
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-4||MEDIUM
EPSS-1.10% / 62.23%
||
7 Day CHG~0.00%
Published-29 Apr, 2006 | 10:00
Updated-16 Apr, 2026 | 00:27
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Opera offers an Open button to verify that a user wishes to execute a downloaded file, which allows user-assisted remote attackers to construct a race condition that tricks a user into clicking Open via a request for a different mouse or keyboard action very shortly before the Open dialog appears. NOTE: this is a different issue than CVE-2005-2407.

Action-Not Available
Vendor-n/aOperaMozilla Corporation
Product-opera_browsermozillan/a
CWE ID-CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2026-45447
Matching Score-6
Assigner-OpenSSL Software Foundation
ShareView Details
Matching Score-6
Assigner-OpenSSL Software Foundation
CVSS Score-8.8||HIGH
EPSS-5.24% / 91.66%
||
7 Day CHG+2.52%
Published-09 Jun, 2026 | 16:03
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Heap Use-After-Free in the PKCS7_verify() Function

Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS#7 or S/MIME signed message, if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may incorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent use of the BIO by the calling application results in a use-after-free condition. In the common case this occurs when the application later calls BIO_free() on the BIO originally passed to PKCS7_verify(). Depending on allocator behavior and application-specific BIO usage patterns, this may result in a crash or other memory corruption. In some application contexts this may potentially be exploitable for remote code execution. Applications that process PKCS#7 or S/MIME signed messages using OpenSSL PKCS#7 APIs may be affected. Applications using the CMS APIs for this processing are not affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

Action-Not Available
Vendor-OpenSSLRed Hat, Inc.
Product-opensslOpenSSLRed Hat Insights proxy 1.5Red Hat Advanced Cluster Management for Kubernetes 2Red Hat Enterprise Linux 8Multicluster Engine for KubernetesRed Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Discovery 2Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Update Infrastructure 5Cost Management Metrics Operator 4Red Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 9Red Hat OpenShift Container Platform 4Red Hat Enterprise Linux 7Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 6
CWE ID-CWE-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-50257
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-7.8||HIGH
EPSS-0.14% / 3.92%
||
7 Day CHG~0.00%
Published-05 Jun, 2026 | 10:31
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root.

Action-Not Available
Vendor-X.Org FoundationRed Hat, Inc.
Product-xwaylandx_serverenterprise_linuxRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 9Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 10Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 6
CWE ID-CWE-416
Use After Free
CVE-2026-50260
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-7.8||HIGH
EPSS-0.15% / 5.00%
||
7 Day CHG~0.00%
Published-05 Jun, 2026 | 10:36
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for privilege escalation if the X server runs as root.

Action-Not Available
Vendor-X.Org FoundationRed Hat, Inc.
Product-xwaylandx_serverenterprise_linuxRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 9Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 10Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 6
CWE ID-CWE-416
Use After Free
CVE-2026-52950
Matching Score-6
Assigner-kernel.org
ShareView Details
Matching Score-6
Assigner-kernel.org
CVSS Score-7.8||HIGH
EPSS-0.14% / 3.66%
||
7 Day CHG~0.00%
Published-24 Jun, 2026 | 16:28
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
drm/xe/dma-buf: fix UAF with retry loop

In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: fix UAF with retry loop Retry doesn't work here, since bo will be freed on error, leading to UAF. However, now that we do the alloc & init before the attach, we can now combine this as one unit and have the init do the alloc for us. This should make the retry safe. Reported by Sashiko. v2: Fix up the error unwind (CI) (cherry picked from commit 479669418253e0f27f8cf5db01a731352ea592e7)

Action-Not Available
Vendor-Linux Kernel Organization, IncRed Hat, Inc.
Product-linux_kernelLinuxRed Hat Enterprise Linux 8Red Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6
CWE ID-CWE-825
Expired Pointer Dereference
CWE ID-CWE-416
Use After Free
CVE-2026-52973
Matching Score-6
Assigner-kernel.org
ShareView Details
Matching Score-6
Assigner-kernel.org
CVSS Score-7.8||HIGH
EPSS-0.14% / 3.87%
||
7 Day CHG+0.01%
Published-24 Jun, 2026 | 16:28
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
futex: Drop CLONE_THREAD requirement for private default hash alloc

In the Linux kernel, the following vulnerability has been resolved: futex: Drop CLONE_THREAD requirement for private default hash alloc Currently need_futex_hash_allocate_default() depends on strict pthread semantics, abusing CLONE_THREAD. This breaks the non-concurrency assumptions when doing the mm->futex_ref pcpu allocations, leading to bugs[0] when sharing the mm in other ways; ie: BUG: KASAN: slab-use-after-free in futex_hash_put ... where the +1 bias can end up on a percpu counter that mm->futex_ref no longer points at. Loosen the check to cover any CLONE_VM clone, except vfork(). Excluding vfork keeps the existing paths untouched (no overhead), and we can't race in the first place: either the parent is suspended and the child runs alone, or mm->futex_ref is already allocated from an earlier CLONE_VM.

Action-Not Available
Vendor-Linux Kernel Organization, IncRed Hat, Inc.
Product-linux_kernelLinuxRed Hat Enterprise Linux 8Red Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6
CWE ID-CWE-825
Expired Pointer Dereference
CWE ID-CWE-416
Use After Free
CVE-2026-52976
Matching Score-6
Assigner-kernel.org
ShareView Details
Matching Score-6
Assigner-kernel.org
CVSS Score-7.8||HIGH
EPSS-0.13% / 3.28%
||
7 Day CHG~0.00%
Published-24 Jun, 2026 | 16:28
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() Two error handling issues exist in xe_exec_queue_create_ioctl(): 1. When xe_hw_engine_group_add_exec_queue() fails, the error path jumps to put_exec_queue which skips xe_exec_queue_kill(). If the VM is in preempt fence mode, xe_vm_add_compute_exec_queue() has already added the queue to the VM's compute exec queue list. Skipping the kill leaves the queue on that list, leading to a dangling pointer after the queue is freed. 2. When xa_alloc() fails after xe_hw_engine_group_add_exec_queue() has succeeded, the error path does not call xe_hw_engine_group_del_exec_queue() to remove the queue from the hw engine group list. The queue is then freed while still linked into the hw engine group, causing a use-after-free. Fix both by: - Changing the xe_hw_engine_group_add_exec_queue() failure path to jump to kill_exec_queue so that xe_exec_queue_kill() properly removes the queue from the VM's compute list. - Adding a del_hw_engine_group label before kill_exec_queue for the xa_alloc() failure path, which removes the queue from the hw engine group before proceeding with the rest of the cleanup. (cherry picked from commit 37c831f401746a45d510b312b0ed7a77b1e06ec8)

Action-Not Available
Vendor-Linux Kernel Organization, IncRed Hat, Inc.
Product-linux_kernelLinuxRed Hat Enterprise Linux 8Red Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6
CWE ID-CWE-825
Expired Pointer Dereference
CWE ID-CWE-416
Use After Free
CVE-2026-53006
Matching Score-6
Assigner-kernel.org
ShareView Details
Matching Score-6
Assigner-kernel.org
CVSS Score-9.8||CRITICAL
EPSS-0.38% / 30.64%
||
7 Day CHG-0.01%
Published-24 Jun, 2026 | 16:29
Updated-27 Jul, 2026 | 13:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
ipv6: fix possible UAF in icmpv6_rcv()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call.

Action-Not Available
Vendor-Linux Kernel Organization, IncRed Hat, Inc.
Product-linux_kernelenterprise_linuxLinuxRed Hat Enterprise Linux 8Red Hat Enterprise Linux 9Red Hat Enterprise Linux 7Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6
CWE ID-CWE-825
Expired Pointer Dereference
CWE ID-CWE-416
Use After Free
CVE-2016-9896
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-1.99% / 78.53%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-06 Aug, 2024 | 03:07
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free while manipulating the "navigator" object within WebVR. Note: WebVR is not currently enabled by default. This vulnerability affects Firefox < 50.1.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxFirefox
CWE ID-CWE-416
Use After Free
CVE-2020-12405
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-5.3||MEDIUM
EPSS-1.35% / 68.66%
||
7 Day CHG~0.00%
Published-09 Jul, 2020 | 14:45
Updated-04 Aug, 2024 | 11:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxthunderbirdfirefox_esrThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CWE ID-CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2012-1975
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-10||HIGH
EPSS-5.61% / 92.10%
||
7 Day CHG~0.00%
Published-29 Aug, 2012 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Use-after-free vulnerability in the PresShell::CompleteMove function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Action-Not Available
Vendor-n/aCanonical Ltd.openSUSESUSERed Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-thunderbirdfirefoxubuntu_linuxseamonkeylinux_enterprise_desktopenterprise_linux_serverenterprise_linux_workstationthunderbird_esrdebian_linuxenterprise_linux_desktoplinux_enterprise_serverenterprise_linux_server_eusenterprise_linux_euslinux_enterprise_software_development_kitopensusen/a
CWE ID-CWE-416
Use After Free
CVE-2020-12416
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-1.35% / 68.59%
||
7 Day CHG~0.00%
Published-09 Jul, 2020 | 14:40
Updated-04 Aug, 2024 | 11:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A VideoStreamEncoder may have been freed in a race condition with VideoBroadcaster::AddOrUpdateSink, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.

Action-Not Available
Vendor-openSUSEMozilla Corporation
Product-firefoxleapFirefox
CWE ID-CWE-416
Use After Free
CWE ID-CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2024-31083
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-7.8||HIGH
EPSS-1.84% / 76.80%
||
7 Day CHG~0.00%
Published-05 Apr, 2024 | 12:04
Updated-15 Apr, 2026 | 00:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Xorg-x11-server: use-after-free in procrenderaddglyphs

A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.

Action-Not Available
Vendor-Red Hat, Inc.
Product-Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat Enterprise Linux 9Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat Enterprise Linux 7Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 8Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat Enterprise Linux 9.0 Extended Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRed Hat Enterprise Linux 8.2 Update Services for SAP Solutions
CWE ID-CWE-416
Use After Free
CVE-2020-12420
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-1.86% / 77.02%
||
7 Day CHG~0.00%
Published-09 Jul, 2020 | 14:39
Updated-04 Aug, 2024 | 11:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Action-Not Available
Vendor-Canonical Ltd.openSUSEMozilla Corporation
Product-ubuntu_linuxthunderbirdfirefoxfirefox_esrleapFirefoxFirefox ESRThunderbird
CWE ID-CWE-416
Use After Free
CWE ID-CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2024-2612
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-0.97% / 58.27%
||
7 Day CHG~0.00%
Published-19 Mar, 2024 | 12:02
Updated-17 Jul, 2025 | 13:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

If an attacker could find a way to trigger a particular code path in `SafeRefPtr`, it could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdFirefox ESRFirefoxThunderbirdfirefoxfirefox_esrthunderbird
CWE ID-CWE-416
Use After Free
CVE-2026-6759
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.36% / 28.95%
||
7 Day CHG~0.00%
Published-21 Apr, 2026 | 12:40
Updated-26 May, 2026 | 18:29
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Use-after-free in the Widget: Cocoa component

Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxFirefoxThunderbird
CWE ID-CWE-416
Use After Free
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