CVEvulnerability
CVE-2026-74942
8.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-18
- Last modified
- 2026-08-21
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-269
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.
Affected configurations
• mozilla firefox (< 115.39.0)
• mozilla firefox (>= 116.0 < 140.14.0)
• mozilla firefox (>= 141.0 < 153.1.0)
• mozilla thunderbird (< 140.14.0)
• mozilla thunderbird (>= 141.0 < 153.1.0)
Related
Weakness · CWE (1)
- CWE-269 Improper Privilege Management weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2056571 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-74/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-75/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-76/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-77/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-78/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-79/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-80/ Vendor Advisory