CVE-2025-14326

CRITICAL

Firefox < 146 - Thunderbird < 146 - Use After Free

Title source: llm

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

Core 3

Core References

Issue Tracking, Permissions Required

Vendor Advisory

Vendor Advisory

CVSS v3 9.8

EPSS 0.0006

EPSS Percentile 19.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

CWE

CWE-416

Status published

Products (4)

mozilla/firefox < 146.0

Mozilla/Firefox 146

mozilla/thunderbird < 146.0

Mozilla/Thunderbird 146

Published Dec 09, 2025

Tracked Since Feb 18, 2026