Unrated severityNVD Advisory· Published Oct 13, 2026

CVE-2026-109740

Description

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Mozilla Corporation/Firefox Esrllm-fuzzy
Range: >=153.5
Mozilla Corporation/Firefoxllm-fuzzy
Range: >=158, >=153.5

Patches

Vulnerability mechanics

References

bugzilla.mozilla.org/show_bug.cginvd
www.mozilla.org/security/advisories/mfsa2026-106/nvd
www.mozilla.org/security/advisories/mfsa2026-108/nvd

News mentions

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