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Vulnerability Details :

CVE-2026-2778

Summary
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At-24 Feb, 2026 | 13:33
Updated At-28 Feb, 2026 | 03:18
Rejected At-
Credits

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

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 Feb, 2026 | 13:33
Updated At:28 Feb, 2026 | 03:18
Rejected At:
â–¼CVE Numbering Authority (CNA)
Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Affected
  • From unspecified before 148 (custom)
Vendor
Mozilla CorporationMozilla
Product
Firefox ESR
Versions
Affected
  • From unspecified before 115.33 (custom)
Vendor
Mozilla CorporationMozilla
Product
Firefox ESR
Versions
Affected
  • From unspecified before 140.8 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 148 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 140.8 (custom)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Sajeeb Lohani
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2016358
N/A
https://www.mozilla.org/security/advisories/mfsa2026-13/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-14/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-15/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-16/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-17/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2016358
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-13/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-14/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-15/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-16/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-17/
Resource: N/A
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-119CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Type: CWE
CWE ID: CWE-119
Description: CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Metrics
VersionBase scoreBase severityVector
3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@mozilla.org
Published At:24 Feb, 2026 | 14:16
Updated At:28 Feb, 2026 | 04:16

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

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
Primary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Secondary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Type: Primary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CPE Matches

Mozilla Corporation
mozilla
>>firefox>>Versions before 115.33.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions before 148.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions from 128.0(inclusive) to 140.8.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 140.8.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 148.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Weaknesses
CWE IDTypeSource
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE-119Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-119
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=2016358security@mozilla.org
Issue Tracking
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-13/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-14/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-15/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-16/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-17/security@mozilla.org
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2016358
Source: security@mozilla.org
Resource:
Issue Tracking
Permissions Required
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-13/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-14/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-15/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-16/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-17/
Source: security@mozilla.org
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
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CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-2710
Matching Score-6
Assigner-Mozilla Corporation
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Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-6.8||MEDIUM
EPSS-2.42% / 84.87%
||
7 Day CHG~0.00%
Published-14 May, 2015 | 10:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Heap-based buffer overflow in the SVGTextFrame class in Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Thunderbird before 31.7 allows remote attackers to execute arbitrary code via crafted SVG graphics data in conjunction with a crafted Cascading Style Sheets (CSS) token sequence.

Action-Not Available
Vendor-n/aMozilla CorporationNovellopenSUSE
Product-firefoxopensusefirefox_esrsuse_linux_enterprise_serverthunderbirdsuse_linux_enterprise_software_development_kitsuse_linux_enterprise_desktopn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-2726
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-10||HIGH
EPSS-1.25% / 79.10%
||
7 Day CHG~0.00%
Published-06 Jul, 2015 | 01:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 39.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Action-Not Available
Vendor-n/aMozilla CorporationOracle CorporationNovell
Product-solarisfirefoxsuse_linux_enterprise_serversuse_linux_enterprise_desktopsuse_linux_enterprise_software_development_kitn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-2712
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-3.88% / 88.01%
||
7 Day CHG~0.00%
Published-14 May, 2015 | 10:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The asm.js implementation in Mozilla Firefox before 38.0 does not properly determine heap lengths during identification of cases in which bounds checking may be safely skipped, which allows remote attackers to trigger out-of-bounds write operations and possibly execute arbitrary code, or trigger out-of-bounds read operations and possibly obtain sensitive information from process memory, via crafted JavaScript.

Action-Not Available
Vendor-n/aMozilla CorporationopenSUSE
Product-firefoxopensusen/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-2716
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-5.61% / 90.16%
||
7 Day CHG+0.11%
Published-14 May, 2015 | 10:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Buffer overflow in the XML parser in Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Thunderbird before 31.7 allows remote attackers to execute arbitrary code by providing a large amount of compressed XML data, a related issue to CVE-2015-1283.

Action-Not Available
Vendor-n/aMozilla CorporationOracle CorporationopenSUSENovell
Product-thunderbirdsolarisfirefoxopensusefirefox_esrsuse_linux_enterprise_serversuse_linux_enterprise_desktopsuse_linux_enterprise_software_development_kitn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-2724
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-10||HIGH
EPSS-0.91% / 75.55%
||
7 Day CHG~0.00%
Published-06 Jul, 2015 | 01:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Action-Not Available
Vendor-n/aMozilla CorporationOracle CorporationDebian GNU/LinuxNovellCanonical Ltd.
Product-thunderbirdsolarisfirefoxfirefox_esrubuntu_linuxsuse_linux_enterprise_serversuse_linux_enterprise_desktopdebian_linuxsuse_linux_enterprise_software_development_kitn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-0826
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-6.8||MEDIUM
EPSS-0.70% / 71.63%
||
7 Day CHG~0.00%
Published-25 Feb, 2015 | 11:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The nsTransformedTextRun::SetCapitalization function in Mozilla Firefox before 36.0 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read of heap memory) via a crafted Cascading Style Sheets (CSS) token sequence that triggers a restyle or reflow operation.

Action-Not Available
Vendor-n/aMozilla CorporationopenSUSECanonical Ltd.
Product-firefoxopensuseubuntu_linuxn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2007-2867
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-9.3||HIGH
EPSS-21.34% / 95.58%
||
7 Day CHG-10.78%
Published-01 Jun, 2007 | 00:00
Updated-07 Aug, 2024 | 13:57
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Multiple vulnerabilities in the layout engine for Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, Thunderbird 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, and SeaMonkey 1.0.9 and 1.1.2 allow remote attackers to cause a denial of service (crash) via vectors related to dangling pointers, heap corruption, signed/unsigned, and other issues.

Action-Not Available
Vendor-n/aMozilla Corporation
Product-firefoxthunderbirdseamonkeyn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-0824
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-5||MEDIUM
EPSS-1.59% / 81.38%
||
7 Day CHG~0.00%
Published-25 Feb, 2015 | 11:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The mozilla::layers::BufferTextureClient::AllocateForSurface function in Mozilla Firefox before 36.0 allows remote attackers to cause a denial of service (out-of-bounds write of zero values, and application crash) via vectors that trigger use of DrawTarget and the Cairo library for image drawing.

Action-Not Available
Vendor-n/aMozilla CorporationopenSUSECanonical Ltd.
Product-firefoxopensuseubuntu_linuxn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-0825
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-4.3||MEDIUM
EPSS-0.66% / 70.86%
||
7 Day CHG~0.00%
Published-25 Feb, 2015 | 11:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Stack-based buffer underflow in the mozilla::MP3FrameParser::ParseBuffer function in Mozilla Firefox before 36.0 allows remote attackers to obtain sensitive information from process memory via a malformed MP3 file that improperly interacts with memory allocation during playback.

Action-Not Available
Vendor-n/aMozilla CorporationopenSUSECanonical Ltd.
Product-firefoxopensuseubuntu_linuxn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-0827
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-4.3||MEDIUM
EPSS-1.00% / 76.64%
||
7 Day CHG~0.00%
Published-25 Feb, 2015 | 11:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Heap-based buffer overflow in the mozilla::gfx::CopyRect function in Mozilla Firefox before 36.0, Firefox ESR 31.x before 31.5, and Thunderbird before 31.5 allows remote attackers to obtain sensitive information from uninitialized process memory via a malformed SVG graphic.

Action-Not Available
Vendor-n/aMozilla Corporation
Product-firefoxfirefox_esrthunderbirdn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-0811
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-6.4||MEDIUM
EPSS-0.77% / 73.12%
||
7 Day CHG~0.00%
Published-01 Apr, 2015 | 10:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The QCMS implementation in Mozilla Firefox before 37.0 allows remote attackers to obtain sensitive information from process heap memory or cause a denial of service (out-of-bounds read) via an image that is improperly handled during transformation.

Action-Not Available
Vendor-n/aMozilla CorporationopenSUSECanonical Ltd.
Product-firefoxopensuseubuntu_linuxn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-0829
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-6.8||MEDIUM
EPSS-2.18% / 84.09%
||
7 Day CHG~0.00%
Published-25 Feb, 2015 | 11:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Buffer overflow in libstagefright in Mozilla Firefox before 36.0 allows remote attackers to execute arbitrary code via a crafted MP4 video that is improperly handled during playback.

Action-Not Available
Vendor-n/aMozilla CorporationopenSUSEOracle CorporationCanonical Ltd.
Product-firefoxopensuseubuntu_linuxsolarisn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2010-0166
Matching Score-6
Assigner-MITRE Corporation
ShareView Details
Matching Score-6
Assigner-MITRE Corporation
CVSS Score-5.1||MEDIUM
EPSS-17.91% / 95.01%
||
7 Day CHG~0.00%
Published-25 Mar, 2010 | 20:31
Updated-11 Apr, 2025 | 00:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The gfxTextRun::SanitizeGlyphRuns function in gfx/thebes/src/gfxFont.cpp in the browser engine in Mozilla Firefox 3.6 before 3.6.2 on Mac OS X, when the Core Text API is used, does not properly perform certain deletions, which allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via an HTML document containing invisible Unicode characters, as demonstrated by the U+FEFF, U+FFF9, U+FFFA, and U+FFFB characters.

Action-Not Available
Vendor-n/aMozilla CorporationApple Inc.
Product-mac_os_xfirefoxn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2026-0892
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.02% / 5.49%
||
7 Day CHG~0.00%
Published-13 Jan, 2026 | 13:30
Updated-26 Feb, 2026 | 15:04
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 147 and Thunderbird 147

Memory safety bugs present in 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 affects Firefox < 147 and Thunderbird < 147.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2026-0891
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-0.02% / 6.06%
||
7 Day CHG~0.00%
Published-13 Jan, 2026 | 13:30
Updated-26 Feb, 2026 | 15:04
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 affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2025-9184
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-0.06% / 19.35%
||
7 Day CHG~0.00%
Published-19 Aug, 2025 | 20:33
Updated-26 Feb, 2026 | 17:48
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 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142

Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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 < 142, Firefox ESR < 140.2, Thunderbird < 142, and Thunderbird < 140.2.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2025-9179
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.11% / 29.06%
||
7 Day CHG~0.00%
Published-19 Aug, 2025 | 20:33
Updated-03 Nov, 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
Sandbox escape due to invalid pointer in the Audio/Video: GMP component

An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process. This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdFirefoxFirefox ESRThunderbird
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2025-9187
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-0.06% / 19.00%
||
7 Day CHG~0.00%
Published-19 Aug, 2025 | 20:33
Updated-26 Feb, 2026 | 17:48
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 142 and Thunderbird 142

Memory safety bugs present in Firefox 141 and Thunderbird 141. 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 < 142 and Thunderbird < 142.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5186
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-1.70% / 82.04%
||
7 Day CHG~0.00%
Published-18 Oct, 2018 | 13:00
Updated-05 Aug, 2024 | 05:26
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 present in Firefox 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 61.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5183
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-3.92% / 88.08%
||
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

Mozilla developers backported selected changes in the Skia library. These changes correct memory corruption issues including invalid buffer reads and writes during graphic operations. This vulnerability affects Thunderbird ESR < 52.8, Thunderbird < 52.8, and Firefox ESR < 52.8.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/LinuxRed Hat, Inc.
Product-thunderbirdenterprise_linux_server_tusthunderbird_esrfirefoxubuntu_linuxenterprise_linux_desktopenterprise_linux_server_eusenterprise_linux_serverdebian_linuxenterprise_linux_workstationenterprise_linux_server_ausThunderbird ESRFirefox ESRThunderbird
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5150
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-3.92% / 88.08%
||
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

Memory safety bugs were reported in Firefox 59, Firefox ESR 52.7, and Thunderbird 52.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/LinuxRed Hat, Inc.
Product-thunderbirdenterprise_linux_server_tusthunderbird_esrfirefoxubuntu_linuxenterprise_linux_desktopenterprise_linux_server_eusenterprise_linux_serverdebian_linuxenterprise_linux_workstationenterprise_linux_server_ausThunderbirdThunderbird ESRFirefoxFirefox ESR
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5151
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-3.72% / 87.75%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 05:26
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 were reported in Firefox 59. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 60.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5177
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-0.30% / 53.35%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 05:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability exists in XSLT during number formatting where a negative buffer size may be allocated in some instances, leading to a buffer overflow and crash if it occurs. This vulnerability affects Firefox < 60.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5093
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-35.43% / 96.96%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 05:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A heap buffer overflow vulnerability may occur in WebAssembly during Memory/Table resizing, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 58.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5090
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-2.03% / 83.53%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 05:26
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 were reported in Firefox 57. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 58.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5188
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-3.03% / 86.41%
||
7 Day CHG~0.00%
Published-18 Oct, 2018 | 13:00
Updated-21 Oct, 2024 | 13:55
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 present in Firefox 60, Firefox ESR 60, and Firefox ESR 52.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.

Action-Not Available
Vendor-Canonical Ltd.Red Hat, Inc.Mozilla CorporationDebian GNU/Linux
Product-enterprise_linux_serverubuntu_linuxdebian_linuxthunderbirdenterprise_linux_server_eusfirefoxfirefox_esrenterprise_linux_server_ausenterprise_linux_workstationenterprise_linux_server_tusenterprise_linux_desktopThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5126
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-2.04% / 83.58%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 05:26
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 were reported in Firefox 58. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 59.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5127
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-20.18% / 95.38%
||
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

A buffer overflow can occur when manipulating the SVG "animatedPathSegList" through script. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxubuntu_linuxenterprise_linux_desktopenterprise_linux_server_eusenterprise_linux_serverdebian_linuxenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5089
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-2.99% / 86.32%
||
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

Memory safety bugs were reported in Firefox 57 and Firefox ESR 52.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxubuntu_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_workstationThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5125
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.8||HIGH
EPSS-1.07% / 77.42%
||
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

Memory safety bugs were reported in Firefox 58 and Firefox ESR 52.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/LinuxRed Hat, Inc.
Product-thunderbirdfirefoxubuntu_linuxenterprise_linux_desktopenterprise_linux_serverdebian_linuxenterprise_linux_workstationThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5094
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-7.5||HIGH
EPSS-35.43% / 96.96%
||
7 Day CHG~0.00%
Published-11 Jun, 2018 | 21:00
Updated-05 Aug, 2024 | 05:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A heap buffer overflow vulnerability may occur in WebAssembly when "shrinkElements" is called followed by garbage collection on memory that is now uninitialized. This results in a potentially exploitable crash. This vulnerability affects Firefox < 58.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.
Product-firefoxubuntu_linuxFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5187
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-2.34% / 84.59%
||
7 Day CHG~0.00%
Published-18 Oct, 2018 | 13:00
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

Memory safety bugs present in Firefox 60 and Firefox ESR 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/Linux
Product-firefoxthunderbirddebian_linuxubuntu_linuxThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2018-5145
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-9.8||CRITICAL
EPSS-3.92% / 88.08%
||
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

Memory safety bugs were reported in Firefox ESR 52.6. These bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 52.7 and Thunderbird < 52.7.

Action-Not Available
Vendor-Mozilla CorporationCanonical Ltd.Debian GNU/LinuxRed Hat, Inc.
Product-thunderbirdenterprise_linux_server_tusfirefoxubuntu_linuxenterprise_linux_desktopenterprise_linux_server_eusenterprise_linux_serverdebian_linuxenterprise_linux_workstationenterprise_linux_server_ausThunderbirdFirefox ESR
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2025-14333
Matching Score-6
Assigner-Mozilla Corporation
ShareView Details
Matching Score-6
Assigner-Mozilla Corporation
CVSS Score-8.1||HIGH
EPSS-0.07% / 20.61%
||
7 Day CHG~0.00%
Published-09 Dec, 2025 | 13:38
Updated-26 Feb, 2026 | 16:57
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 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146

Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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 < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.

Action-Not Available
Vendor-Mozilla Corporation
Product-firefoxthunderbirdThunderbirdFirefox ESRFirefox
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE ID-CWE-787
Out-of-bounds Write
CVE-2007-1256
Matching Score-6
Assigner-MITRE Corporation
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Matching Score-6
Assigner-MITRE Corporation
CVSS Score-6.8||MEDIUM
EPSS-0.81% / 73.92%
||
7 Day CHG~0.00%
Published-03 Mar, 2007 | 20:00
Updated-07 Aug, 2024 | 12:50
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Mozilla Firefox 2.0.0.2 allows remote attackers to spoof the address bar, favicons, and document source, and perform updates in the context of arbitrary websites, by repeatedly setting document.location in the onunload attribute when linking to another website, a variant of CVE-2007-1092.

Action-Not Available
Vendor-n/aMozilla Corporation
Product-firefoxn/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
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