CVE-2026-92035

CRITICAL 9.6CVE-2026-92035 · Published 15/09/2026 · updated 05/10/2026

Package	Affected versions	Patched versions
firefox mozilla	`≥ 116.0, < 140.17.0≥ 141.0, < 153.3.0≥ 154.0.0, < 156.0.0< 115.42.0`	`140.17.0153.3.0156.0.0115.42.0`
thunderbird mozilla	`≥ 141.0, < 153.3.0≥ 154.0, < 156.0< 140.17.0`	`153.3.0156.0140.17.0`

Description

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR 153.3, Thunderbird 156, Thunderbird 153.3, Firefox ESR 115.42, and Firefox ESR 140.17.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-102 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-90 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-93 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-94 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-96 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-98 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-99 · Vendor Advisory

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