CVE-2025-14321

CRITICAL

9.8

Description

Use-after-free in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/9/2025

Last Modified4/13/2026

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefoxmozilla:thunderbird

Weaknesses (CWE)

CWE-416CWE-416

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1992760(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-92/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-94/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-95/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-96/(security@mozilla.org)

IOC Correlations

No correlations recorded

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