Use-after-free in Mozilla Firefox and Firefox for Android - CVE-2025-14326
Published: December 9, 2025
Vulnerability identifier: #VU119419
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-14326
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to a use-after-free error in the Audio/Video GMP component. A remote attacker can trick the victim into visiting a specially crafted website and bypass implemented security restrictions.
Affected software
Mozilla Firefox
Firefox for Android
Mozilla Thunderbird
Firefox for Android
Mozilla Thunderbird
How to mitigate CVE-2025-14326
Install updates from vendor's website.
Mozilla Firefox - update to 146.0
Firefox for Android - update to 146.0
Mozilla Thunderbird - update to 146.0
Firefox for Android - update to 146.0
Mozilla Thunderbird - update to 146.0