EUVD-2026-14686
GHSA-ffwc-xvf2-hgr5
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Integer overflow in Fonts in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Out-of-bounds memory write in Google Chrome's font handling prior to version 146.0.7680.165 enables remote code execution when users visit malicious HTML pages. An unauthenticated attacker can exploit an integer overflow vulnerability to achieve complete system compromise with high integrity and confidentiality impact. Patches are available for Chrome and affected Debian systems.
Technical ContextAI
The vulnerability resides in the font processing subsystem of Chromium/Google Chrome, where integer arithmetic operations on font-related data structures fail to properly validate bounds before memory allocation or buffer operations. The root cause is classified as CWE-472 (Improper Handling of Integer Overflow), which encompasses scenarios where integer calculations wrap around or exceed expected limits, leading to undersized buffer allocations or incorrect offset calculations. When processing specially crafted font data embedded in or referenced by HTML, the integer overflow causes the font parser to allocate insufficient memory or calculate incorrect buffer offsets, ultimately enabling writes beyond the intended memory region. This is a classic buffer overflow scenario triggered through the web attack surface, requiring only that a user visit or load a malicious webpage containing the crafted font resource.
RemediationAI
Upgrade Google Chrome to version 146.0.7680.165 or later immediately by navigating to Chrome menu > Settings > About Google Chrome, which will auto-detect and prompt for installation of the latest version. Users on managed endpoints should deploy version 146.0.7680.165 through their organization's software update mechanism (WSUS, MDM, etc.) with priority classification. Until patching is complete across all systems, consider temporarily restricting access to untrusted websites or disabling JavaScript in high-risk browsing contexts, though these are incomplete mitigations. Monitor the Chrome Release Blog and Chromium issue tracker (https://issues.chromium.org/issues/491516670) for additional technical details and confirm deployment of the patch across all affected Chrome instances in your environment.
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player
V8 in Google Chrome prior to 54.0.2840.90 for Linux, and 54.0.2840.85 for Android, and 54.0.2840.87 for Windows and Mac
Type confusion in V8 in Google Chrome prior to 59.0.3071.86 for Linux, Windows, and Mac, and 59.0.3071.92 for Android, a
The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, do
Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderb
Incorrect handling of complex species in V8 in Google Chrome prior to 57.0.2987.98 for Linux, Windows, and Mac and 57.0.
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbi
An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Conta
The XrayWrapper implementation in Mozilla Firefox before 35.0 and SeaMonkey before 2.32 does not properly interact with
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbi
The Web IDL implementation in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and Se
Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
Same technique Buffer Overflow
View allVendor StatusVendor
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye (security), bullseye | vulnerable | 120.0.6099.224-1~deb11u1 | - |
| bookworm | vulnerable | 143.0.7499.169-1~deb12u1 | - |
| bookworm (security) | vulnerable | 146.0.7680.153-1~deb12u1 | - |
| trixie | vulnerable | 145.0.7632.159-1~deb13u1 | - |
| trixie (security) | vulnerable | 146.0.7680.153-1~deb13u1 | - |
| forky | vulnerable | 146.0.7680.153-1 | - |
| sid | fixed | 146.0.7680.164-1 | - |
| bullseye | fixed | (unfixed) | end-of-life |
| (unstable) | fixed | 146.0.7680.164-1 | - |
SUSE
Severity: High| Product | Status |
|---|---|
| SUSE Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.6 | Fixed |
| openSUSE Leap 16.0 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP6 | Fixed |
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External POC / Exploit Code
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