CVE-2026-4705
critical · 9.8Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
9.8
CVSS
0.4%
EPSS (exploit prob.)
36th
EPSS percentile
2026-03-24
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-758
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | firefox | < 140.9.0 |
| mozilla | firefox | < 149.0 |
Check a specific version with /api/v1/cve/match.
References
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-4705