Vulnerability Details CVE-2026-92064
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.2%
CVSS Severity
CVSS v3 Score 8.8