CVE-2026-92055
Privilege escalation in the DevTools component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
- Published Sep 15, 2026
- CVSS 8.8 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available