What’s Vulnerable › Vulnerabilities

CVE-2025-14326: Use-after-free in the Audio/Video: GMP component

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-09 · updated 2026-10-07
• Weakness: CWE-416

Description

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

Affected products

• Mozilla Firefox: before 146.0 — fixed in 146.0
• Mozilla Thunderbird: before 146.0 — fixed in 146.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 146.0; Mozilla Thunderbird 146.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1840666
• https://www.mozilla.org/security/advisories/mfsa2025-92/
• https://www.mozilla.org/security/advisories/mfsa2025-95/

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