CVEvulnerability
CVE-2026-16390
9.1 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-21
- Last modified
- 2026-10-24
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-693
Description
Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Affected configurations
• mozilla firefox (< 140.13.0)
• mozilla firefox (< 153.0.0)
• mozilla thunderbird (< 140.13.0)
• mozilla thunderbird (>= 141.0 < 153.0)
Related
Weakness · CWE (1)
- CWE-693 Protection Mechanism Failure weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2044527 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-68/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-70/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-71/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-72/ Vendor Advisory