VULNERABILITY INTELLIGENCE

CVE-2026-74979

CVSS score9.8 CRITICAL
EPSS probability0.53%
CISA KEVNot currently listed
Published2026-08-18
Last modified2026-08-20
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Weakness classification

  • CWE-284: Improper Access Control

Primary references