Critical severity · published Dec 9, 2025
CVE-2025-14326
Use-after-free in the Audio/Video: GMP component
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 146.0 · source: NVD
TH
Thunderbird · Mozilla
before 146.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-14326
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-14326
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1840666
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-92/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-95/
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