CVEvulnerability
CVE-2026-4718
8.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-03-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-758
Description
Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Affected configurations
• mozilla firefox (< 140.9.0)
• mozilla firefox (< 149.0)
• mozilla thunderbird (< 140.9.0)
• mozilla thunderbird (< 149.0)
Related
Weakness · CWE (1)
- CWE-758 Reliance on Undefined, Unspecified, or Implementation-Defined Behavior weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2014864 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-20/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-22/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-23/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-24/ Vendor Advisory