Description
Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
Affected products
mozilla: firefox; mozilla: thunderbird
References3
- www.mozilla.org/security/advisories/mfsa2025-92/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-95/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1840666 Issue TrackingPermissions Required
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 43 · as of 11 November 2026
- CWE
- CWE-416
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