CVE-2025-14326

CRITICAL 9.8CVE-2025-14326 · Published 09/12/2025 · updated 07/10/2026

In short

CVE-2025-14326 is a CRITICAL (CVSS 9.8) vulnerability affecting firefox (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.46%, higher than 40.1% of all vulnerabilities.
Fix: update to 146.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 146.0`	`146.0`
thunderbird mozilla	`< 146.0`	`146.0`

Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

< 146.0

146.0

< 146.0

146.0

More vulnerabilities in firefox

See all →