CVE-2026-74985CWE-269privilege-escalation

CVE-2026-74985

Critical · published August 18, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
43.8
In the wild
Unconfirmed
What it is

Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00527 · 43.8th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-08-18T17:17Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 153.1.0153.1.0
mozilla/thunderbird< 153.1.0153.1.0
References (5)
https://bugzilla.mozilla.org/show_bug.cgi?id=2059825 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-74/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-77/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-78/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-80/ · [email protected]
EPSS history
Timeline
  • 18 AUG 12:23Z
    Privilege escalation in the Enterprise Policies component
    cvelistv5