CVE-2025-14326
published 2025-12-09CVE-2025-14326: Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
PriorityP347critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.40%
32.8th percentile
Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| mozilla | firefox | < 146.0 | 146.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 146.0 | 146.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
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GHSA
GHSA-2628-4jvp-96vc: Use-after-free in the Audio/Video: GMP component
ghsa_unreviewed·2025-12-09
CVE-2025-14326 [CRITICAL] CWE-416 GHSA-2628-4jvp-96vc: Use-after-free in the Audio/Video: GMP component
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146.
OSV
CVE-2025-14326: Use-after-free in the Audio/Video: GMP component
osv·2025-12-09·CVSS 9.8
CVE-2025-14326 [CRITICAL] CVE-2025-14326: Use-after-free in the Audio/Video: GMP component
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
Red Hat
firefox: Use-after-free in the Audio/Video: GMP component
vendor_redhat·2025-12-09·CVSS 9.8
CVE-2025-14326 [CRITICAL] firefox: Use-after-free in the Audio/Video: GMP component
firefox: Use-after-free in the Audio/Video: GMP component
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Audio/Video: GMP component.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affected
Package: firefox (Red Hat Enterprise Linux 8) - Not affected
Package: firefox
Debian
CVE-2025-14326: firefox - Use-after-free in the Audio/Video: GMP component. This vulnerability affects Fir...
vendor_debian·2025·CVSS 9.8
CVE-2025-14326 [CRITICAL] CVE-2025-14326: firefox - Use-after-free in the Audio/Video: GMP component. This vulnerability affects Fir...
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
Scope: local
sid: resolved (fixed in 146.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-92: CVE-2025-14326
vendor_mozilla·CVSS 9.8
CVE-2025-14326 [CRITICAL] Mozilla Foundation Security Advisory 2025-92: CVE-2025-14326
Mozilla Foundation Security Advisory 2025-92
CVE: CVE-2025-14326
Product: Firefox
Impact: moderate
Fixed in: Firefox 146
Mozilla
Mozilla Foundation Security Advisory 2025-95: CVE-2025-14326
vendor_mozilla·CVSS 9.8
CVE-2025-14326 [CRITICAL] Mozilla Foundation Security Advisory 2025-95: CVE-2025-14326
Mozilla Foundation Security Advisory 2025-95
CVE: CVE-2025-14326
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 146
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-14326 firefox: Use-after-free in the Audio/Video: GMP component
bugzilla·2025-12-09·CVSS 9.8
CVE-2025-14326 [CRITICAL] CVE-2025-14326 firefox: Use-after-free in the Audio/Video: GMP component
CVE-2025-14326 firefox: Use-after-free in the Audio/Video: GMP component
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146.
Wiz
CVE-2025-14326 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 9.8
CVE-2025-14326 [CRITICAL] CVE-2025-14326 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-14326 :
NixOS vulnerability analysis and mitigation
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
Source : NVD
## 9.8
Score
Published December 9, 2025
Severity CRITICAL
CNA Score 9.8
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) 18.5
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
cpe:2.3:a:mozilla:firefox
cpe:2.3:a:mozilla:thunderbird
Sources
Homebrew Severity CRITICAL Has Fix Added at: Dec 12, 2025
Nix Severity CRITICAL Has Fix Added at: Dec 12, 2025
Ubuntu 22.04 Severity MEDIUM No Fix Added at: Dec 11, 2025
Linux Severity CRITICA
2025-12-09
Published