by Kastro
Paper/Archive/CVE-2026-92035

CVE-2026-92035

Mozilla Firefox — Sandbox escape due to incorrect boundary conditions in the Graphics component

EPSS 0.3%CVSS 9.6
critical.is priorityof 100
34
CVSS 9.6 (ADP)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 25.9.259 × 205.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory115.42CNA
Thunderbirdsee advisory140.17CNA

Scores by source

CISA ADP9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=2061245refmozilla.org/security/advisories/mfsa2026-102refmozilla.org/security/advisories/mfsa2026-90refmozilla.org/security/advisories/mfsa2026-93refmozilla.org/security/advisories/mfsa2026-94refmozilla.org/security/advisories/mfsa2026-96refmozilla.org/security/advisories/mfsa2026-98refmozilla.org/security/advisories/mfsa2026-99