VULNERABILITY INTELLIGENCE
CVE-2026-74942
CVSS score8.8 HIGH
EPSS probability0.45%
CISA KEVNot currently listed
Published2026-08-18
Last modified2026-08-21
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-269
Primary references
- security@mozilla.org — Permissions Required
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory