CVE-2025-14322
published 2025-12-09CVE-2025-14322: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31…
PriorityP341high8CVSS 3.1
AVNACHPRNUIRSCCHIHAN
EPSS
0.29%
20.6th percentile
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| debian | firefox-esr | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| debian | thunderbird | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| mozilla | firefox | < 115.31.0 | 115.31.0 |
| mozilla | firefox | < 146.0 | 146.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 116.0 < 140.6.0 | 140.6.0 |
| mozilla | thunderbird | < 140.6.0 | 140.6.0 |
| mozilla | thunderbird | < 146.0 | 146.0 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1~deb11u1 | 1:140.6.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1~deb12u1 | 1:140.6.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1~deb13u1 | 1:140.6.0esr-1~deb13u1 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1 | 1:140.6.0esr-1 |
CVSS provenance
nvdv3.18.0HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
osv8.0HIGH
vendor_debian8.0HIGH
vendor_redhat8.0HIGH
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2026-02-02
CVE-2025-8031 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
vendor_redhat·2025-12-09·CVSS 8.0
CVE-2025-14322 [HIGH] firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enter
Debian
CVE-2025-14322: firefox - Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL...
vendor_debian·2025·CVSS 8.0
CVE-2025-14322 [HIGH] CVE-2025-14322: firefox - Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL...
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
Scope: local
sid: resolved (fixed in 146.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-92: CVE-2025-14322
vendor_mozilla·CVSS 8.0
CVE-2025-14322 [HIGH] Mozilla Foundation Security Advisory 2025-92: CVE-2025-14322
Mozilla Foundation Security Advisory 2025-92
CVE: CVE-2025-14322
Product: Firefox
Impact: moderate
Fixed in: Firefox 146
Mozilla
Mozilla Foundation Security Advisory 2025-95: CVE-2025-14322
vendor_mozilla·CVSS 8.0
CVE-2025-14322 [HIGH] Mozilla Foundation Security Advisory 2025-95: CVE-2025-14322
Mozilla Foundation Security Advisory 2025-95
CVE: CVE-2025-14322
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 146
Mozilla
Mozilla Foundation Security Advisory 2025-96: CVE-2025-14322
vendor_mozilla·CVSS 8.0
CVE-2025-14322 [HIGH] Mozilla Foundation Security Advisory 2025-96: CVE-2025-14322
Mozilla Foundation Security Advisory 2025-96
CVE: CVE-2025-14322
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 140.6
Mozilla
Mozilla Foundation Security Advisory 2025-93: CVE-2025-14322
vendor_mozilla·CVSS 8.0
CVE-2025-14322 [HIGH] Mozilla Foundation Security Advisory 2025-93: CVE-2025-14322
Mozilla Foundation Security Advisory 2025-93
CVE: CVE-2025-14322
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 115.31
Mozilla
Mozilla Foundation Security Advisory 2025-94: CVE-2025-14322
vendor_mozilla·CVSS 8.0
CVE-2025-14322 [HIGH] Mozilla Foundation Security Advisory 2025-94: CVE-2025-14322
Mozilla Foundation Security Advisory 2025-94
CVE: CVE-2025-14322
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 140.6
VulDB
Mozilla Firefox up to 145 CanvasWebGL sandbox (Nessus ID 278145 / WID-SEC-2025-2812)
vuldb·2026-06-12·CVSS 8.0
CVE-2025-14322 [HIGH] Mozilla Firefox up to 145 CanvasWebGL sandbox (Nessus ID 278145 / WID-SEC-2025-2812)
A vulnerability labeled as critical has been found in Mozilla Firefox up to 145. Impacted is an unknown function of the component CanvasWebGL. The manipulation results in sandbox issue.
This vulnerability is reported as CVE-2025-14322. The attack can be launched remotely. No exploit exists.
The affected component should be upgraded.
GHSA
GHSA-w8g6-3pw6-4hxr: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
ghsa_unreviewed·2025-12-09
CVE-2025-14322 [HIGH] CWE-754 GHSA-w8g6-3pw6-4hxr: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.
OSV
CVE-2025-14322: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
osv·2025-12-09·CVSS 8.0
CVE-2025-14322 [HIGH] CVE-2025-14322: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
No detection rules found.
No public exploits indexed.
Wiz
CVE-2025-14322 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.0
CVE-2025-14322 [HIGH] CVE-2025-14322 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-14322 :
NixOS vulnerability analysis and mitigation
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
Source : NVD
## 8
Score
Published December 9, 2025
Severity HIGH
CNA Score 8.0
Affected Technologies
NixOS
Mozilla Firefox
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 14.4
Exploitation Probability (EPSS) N/A
Affected packages and libraries
MozillaFirefox-translations-common
MozillaFirefox-translations-other
Sources
AlmaLinux 8 Severity HIGH Has Fix Added at: Dec 12, 2025
AlmaLinux 9 Severity HI
Bugzilla
CVE-2025-14322 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
bugzilla·2025-12-09·CVSS 8.0
CVE-2025-14322 [HIGH] CVE-2025-14322 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
CVE-2025-14322 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 10
Via RHSA-2025:23035 https://access.redhat.com/errata/RHSA-2025:23035
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2025:23034 https://access.redhat.com/errata/RHSA-2025:23034
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2025:23128 https://access.redhat.com/errata/RHSA-2025:2312
https://bugzilla.mozilla.org/show_bug.cgi?id=1996473https://www.mozilla.org/security/advisories/mfsa2025-92/https://www.mozilla.org/security/advisories/mfsa2025-93/https://www.mozilla.org/security/advisories/mfsa2025-94/https://www.mozilla.org/security/advisories/mfsa2025-95/https://www.mozilla.org/security/advisories/mfsa2025-96/
2025-12-09
Published