CVE-2025-14326

Use-after-free in the Audio/Video: GMP component

Published Dec 9, 2025 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146. Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
Weaknesses CWE-416
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Vendors & Products Mozilla thunderbird
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146. Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
References
Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

threat_severity

Moderate

Type Values Removed Values Added
Description Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146.
Title Use-after-free in the Audio/Video: GMP component
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Apr 13, 2026, 2:28 PM
Reserved
Dec 9, 2025, 1:37 PM
Status
Modified
Published
Dec 9, 2025, 4:17 PM
Modified
Oct 7, 2026, 8:10 PM
Severity
Moderate
Public date
Dec 9, 2025, 1:38 PM