Vulnerability Description
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.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2057990
- https://www.mozilla.org/security/advisories/mfsa2026-90/
- https://www.mozilla.org/security/advisories/mfsa2026-93/
- https://www.mozilla.org/security/advisories/mfsa2026-94/
- https://www.mozilla.org/security/advisories/mfsa2026-96/
FAQ
What is CVE-2026-92064?
CVE-2026-92064 is a documented vulnerability. 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.
How severe is CVE-2026-92064?
CVSS scoring is not yet available for CVE-2026-92064. Check NVD for updates.
Is there a patch for CVE-2026-92064?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.