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Vulnerability Details :

CVE-2025-1012

Summary
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At-04 Feb, 2025 | 13:58
Updated At-13 Apr, 2026 | 14:25
Rejected At-
Credits

Use-after-free during concurrent delazification

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

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)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mozilla
Assigner Org ID:f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At:04 Feb, 2025 | 13:58
Updated At:13 Apr, 2026 | 14:25
Rejected At:
▼CVE Numbering Authority (CNA)
Use-after-free during concurrent delazification

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Unaffected
  • From 115.20 through 115.* (rpm)
  • From 128.7 through 128.* (rpm)
  • From 135 through * (rpm)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Unaffected
  • From 128.7 through 128.* (rpm)
  • From 135 through * (rpm)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Nils Bars
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
N/A
https://www.mozilla.org/security/advisories/mfsa2025-07/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-08/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-09/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-10/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-11/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-07/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-08/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-09/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-10/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-11/
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-416CWE-416 Use After Free
Type: CWE
CWE ID: CWE-416
Description: CWE-416 Use After Free
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
N/A
https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
Resource: N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@mozilla.org
Published At:04 Feb, 2025 | 14:15
Updated At:13 Apr, 2026 | 15:16

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

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
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Primary
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: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches

Mozilla Corporation
mozilla
>>firefox>>Versions before 115.20.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions before 135.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions from 128.1.0(inclusive) to 128.7.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 135.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions from 128.0.1(inclusive) to 128.7.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Weaknesses
CWE IDTypeSource
CWE-416Primarynvd@nist.gov
CWE-416Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-416
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-416
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1939710security@mozilla.org
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-07/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-08/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-09/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-10/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-11/security@mozilla.org
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/02/msg00005.htmlaf854a3a-2127-422b-91ae-364da2661108
N/A
https://lists.debian.org/debian-lts-announce/2025/02/msg00006.htmlaf854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
Source: security@mozilla.org
Resource:
Permissions Required
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-07/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-08/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-09/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-10/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-11/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A

Change History

0
Information is not available yet

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Published-11 Dec, 2013 | 15:00
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

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Published-11 Dec, 2013 | 15:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

Action-Not Available
Vendor-Mozilla CorporationMicrosoft Corporation
Product-firefox_esrthunderbirdwindowsfirefoxFirefox ESRThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-4688
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.6||CRITICAL
EPSS-0.53% / 41.71%
||
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
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 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-4701
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.46% / 37.48%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-12 May, 2026 | 16:54
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 JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxFirefoxThunderbird
CWE ID-CWE-416
Use After Free
CVE-2026-4684
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.35% / 27.82%
||
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
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.

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-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE ID-CWE-364
Signal Handler Race Condition
CWE ID-CWE-416
Use After Free
CVE-2026-4691
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.48% / 38.92%
||
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
Use-after-free in the CSS Parsing and Computation component

Use-after-free in the CSS Parsing and Computation 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-4696
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.48% / 38.92%
||
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
Use-after-free in the Layout: Text and Fonts component

Use-after-free in the Layout: Text and Fonts 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-4711
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.40% / 32.42%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-13 Apr, 2026 | 15:17
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 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-4723
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.39% / 31.93%
||
7 Day CHG~0.00%
Published-24 Mar, 2026 | 12:30
Updated-13 Apr, 2026 | 15:17
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 JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-8947
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-7.3||HIGH
EPSS-0.41% / 33.90%
||
7 Day CHG~0.00%
Published-19 May, 2026 | 12:29
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
Use-after-free in the DOM: Bindings (WebIDL) component

Use-after-free in the DOM: Bindings (WebIDL) 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-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 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-8390
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-7.3||HIGH
EPSS-0.50% / 39.78%
||
7 Day CHG+0.24%
Published-12 May, 2026 | 12:36
Updated-15 Jul, 2026 | 01:17
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 JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2024-7528
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.52% / 40.89%
||
7 Day CHG~0.00%
Published-06 Aug, 2024 | 12:38
Updated-12 Aug, 2024 | 16:10
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Incorrect garbage collection interaction in IndexedDB could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 128.1, and Thunderbird < 128.1.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdfirefox_esrFirefoxFirefox ESRThunderbirdfirefoxthunderbirdfirefox_esr
CWE ID-CWE-416
Use After Free
CVE-2024-9680
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-23.18% / 97.53%
||
7 Day CHG~0.00%
Published-09 Oct, 2024 | 12:59
Updated-04 Nov, 2025 | 14:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Known KEV||Action Due Date - 2024-11-05||Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.

Action-Not Available
Vendor-Mozilla CorporationDebian GNU/Linux
Product-firefoxdebian_linuxthunderbirdFirefoxFirefox ESRThunderbirdfirefoxfirefox_esrthunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2022-46882
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.92% / 56.63%
||
7 Day CHG~0.00%
Published-22 Dec, 2022 | 00:00
Updated-15 Apr, 2025 | 15:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-after-free in WebGL extensions could have led to a potentially exploitable crash. This vulnerability affects Firefox < 107, Firefox ESR < 102.6, and Thunderbird < 102.6.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefox_esrthunderbirdfirefoxThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-2770
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.47% / 38.01%
||
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
Use-after-free in the DOM: Bindings (WebIDL) component

Use-after-free in the DOM: Bindings (WebIDL) 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-416
Use After Free
CVE-2026-2758
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.48% / 38.52%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:32
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
Use-after-free in the JavaScript: GC component

Use-after-free in the JavaScript: GC 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-416
Use After Free
CVE-2026-2763
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.47% / 38.01%
||
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
Use-after-free in the JavaScript Engine component

Use-after-free in the JavaScript Engine 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-416
Use After Free
CVE-2026-2795
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.25% / 16.06%
||
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
Use-after-free in the JavaScript: GC component

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

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-416
Use After Free
CVE-2026-2797
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.32% / 23.82%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
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
Use-after-free in the JavaScript: GC component

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

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-416
Use After Free
CVE-2026-2798
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.25% / 16.16%
||
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
Use-after-free in the DOM: Core & HTML component

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

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-416
Use After Free
CVE-2022-45406
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.06% / 61.09%
||
7 Day CHG~0.00%
Published-22 Dec, 2022 | 00:00
Updated-15 Apr, 2025 | 15:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be deleted while references to it lived on in a BaseShape. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefox_esrthunderbirdfirefoxThunderbirdFirefox ESRFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-2765
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.47% / 38.01%
||
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
Use-after-free in the JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, 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-416
Use After Free
CVE-2026-2766
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.47% / 38.02%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
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
Use-after-free in the JavaScript Engine: JIT component

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, 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-416
Use After Free
CVE-2026-2767
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.38% / 31.06%
||
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
Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, 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-416
Use After Free
CVE-2026-2772
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.47% / 38.01%
||
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
Use-after-free in the Audio/Video: Playback component

Use-after-free in the Audio/Video: Playback 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-416
Use After Free
CVE-2026-2786
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.31% / 23.74%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
Updated-10 May, 2026 | 13:16
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 JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxFirefoxThunderbird
CWE ID-CWE-416
Use After Free
CVE-2026-2787
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.40% / 32.87%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
Updated-13 Apr, 2026 | 15:17
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 DOM: Window and Location component

Use-after-free in the DOM: Window and Location 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-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-2789
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.32% / 24.09%
||
7 Day CHG~0.00%
Published-24 Feb, 2026 | 13:33
Updated-13 Apr, 2026 | 15:17
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 Graphics: ImageLib component

Use-after-free 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-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-24869
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.23% / 14.17%
||
7 Day CHG~0.00%
Published-27 Jan, 2026 | 15:58
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
Use-after-free in the Layout: Scrolling and Overflow component

Use-after-free in the Layout: Scrolling and Overflow component. This vulnerability was fixed in Firefox 147.0.2.

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-416
Use After Free
CVE-2024-8384
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.72% / 50.09%
||
7 Day CHG~0.00%
Published-03 Sep, 2024 | 12:32
Updated-04 Nov, 2025 | 17:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The JavaScript garbage collector could mis-color cross-compartment objects if OOM conditions were detected at the right point between two passes. This could have led to memory corruption. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxfirefox_esrFirefoxFirefox ESRThunderbirdfirefoxfirefox_esr
CWE ID-CWE-416
Use After Free
CWE ID-CWE-787
Out-of-bounds Write
CVE-2026-16351
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.39% / 32.03%
||
7 Day CHG~0.00%
Published-21 Jul, 2026 | 12:37
Updated-24 Jul, 2026 | 15:45
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 DOM: Navigation component

Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2022-38476
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.82% / 53.49%
||
7 Day CHG~0.00%
Published-22 Dec, 2022 | 00:00
Updated-15 Apr, 2025 | 18:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A data race could occur in the <code>PK11_ChangePW</code> function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password. This vulnerability affects Firefox ESR < 102.2 and Thunderbird < 102.2.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefox_esrthunderbirdThunderbirdFirefox ESR
CWE ID-CWE-416
Use After Free
CVE-2026-16352
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.39% / 32.03%
||
7 Day CHG~0.00%
Published-21 Jul, 2026 | 12:37
Updated-24 Jul, 2026 | 15:47
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 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-16353
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.40% / 33.17%
||
7 Day CHG~0.00%
Published-21 Jul, 2026 | 12:37
Updated-24 Jul, 2026 | 15:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Invalid pointer in the DOM: Bindings (WebIDL) component

Invalid pointer in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Action-Not Available
Vendor-Mozilla Corporation
Product-thunderbirdfirefoxThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CWE ID-CWE-476
NULL Pointer Dereference
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2026-12291
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.38% / 30.79%
||
7 Day CHG~0.00%
Published-16 Jun, 2026 | 11:52
Updated-15 Jul, 2026 | 12:17
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 Networking: HTTP component

Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

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 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-12293
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.30% / 22.48%
||
7 Day CHG~0.00%
Published-16 Jun, 2026 | 11:52
Updated-15 Jul, 2026 | 02:18
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 Graphics: WebGPU component

Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-12298
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-5.4||MEDIUM
EPSS-0.31% / 22.86%
||
7 Day CHG~0.00%
Published-16 Jun, 2026 | 11:52
Updated-15 Jul, 2026 | 12:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bug fixed in Firefox 152

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

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 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-125
Out-of-bounds Read
CWE ID-CWE-416
Use After Free
CWE ID-CWE-787
Out-of-bounds Write
CWE ID-CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
CVE-2026-12329
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-5.3||MEDIUM
EPSS-0.31% / 23.68%
||
7 Day CHG-0.01%
Published-16 Jun, 2026 | 11:53
Updated-15 Jul, 2026 | 12:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Memory safety bug fixed in Thunderbird ESR 140.12

Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.

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 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-416
Use After Free
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2026-0884
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.42% / 34.70%
||
7 Day CHG~0.00%
Published-13 Jan, 2026 | 13:30
Updated-13 Apr, 2026 | 15:17
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 JavaScript Engine component

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-416
Use After Free
CVE-2026-8090
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-7.3||HIGH
EPSS-0.32% / 23.98%
||
7 Day CHG~0.00%
Published-07 May, 2026 | 12:45
Updated-15 Jul, 2026 | 01:17
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 DOM: Networking component

Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.

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 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-416
Use After Free
CWE ID-CWE-825
Expired Pointer Dereference
CVE-2026-0882
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-0.40% / 33.18%
||
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
Use-after-free in the IPC component

Use-after-free in the IPC 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-416
Use After Free
CVE-2022-34470
Matching Score-10
Assigner-Mozilla Corporation
ShareView Details
Matching Score-10
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.06% / 61.16%
||
7 Day CHG~0.00%
Published-22 Dec, 2022 | 00:00
Updated-15 Apr, 2025 | 19:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Session history navigations may have led to a use-after-free and potentially exploitable crash. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

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