by Kastro
Paper/Archive/CVE-2025-14321

CVE-2025-14321

Mozilla Firefox — Use-after-free in the WebRTC: Signaling component

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 48.4.484 × 209.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory140.6CNA
Thunderbirdsee advisory140.6CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=1992760refmozilla.org/security/advisories/mfsa2025-92refmozilla.org/security/advisories/mfsa2025-94refmozilla.org/security/advisories/mfsa2025-95refmozilla.org/security/advisories/mfsa2025-96