Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
CVE-2026-74985
CVSS base score
9.8 (v3.1)
Severity
CRITICAL
Attack vector
Network
Weakness
CWE-269
Last modified
November 3, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
mozilla firefox
mozilla thunderbird
References
- bugzilla.mozilla.org Permissions Required
- www.mozilla.org Vendor Advisory
- www.mozilla.org Vendor Advisory
- www.mozilla.org Vendor Advisory
- www.mozilla.org Vendor Advisory