CVEvulnerability
CVE-2026-75874
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2026-08-18
- Last modified
- 2026-09-01
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-693
Description
Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and Thunderbird 153.2.
Affected configurations
• mozilla firefox (< 154.0.0)
• mozilla thunderbird (< 154.0)
Related
Weakness · CWE (1)
- CWE-693 Protection Mechanism Failure weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2039972 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-74/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-78/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-83/ www.mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-84/ www.mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-85/ www.mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-87/ www.mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-88/ www.mozilla.org