CVE-2025-14321
Use-after-free in the WebRTC: Signaling component
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 9, 2025 |
| Last Updated | Apr 13, 2026 |
Stay Ahead of the Next One
Get instant alerts for mozilla firefox
Be the first to know when new critical vulnerabilities affecting mozilla firefox are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1992760 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-92/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-94/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-95/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-96/
Credits
Igor Morgenstern