Description
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-109740 ↗
- bugzilla.mozilla.org/show_bug.cgi ↗
- www.mozilla.org/security/advisories/mfsa2026-106/ ↗
- www.mozilla.org/security/advisories/mfsa2026-108/ ↗
- www.mozilla.org/security/advisories/mfsa2026-109/ ↗
- www.mozilla.org/security/advisories/mfsa2026-110/ ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.