CVE-2026-100782
HIGH severity · CVSS 8.8 · Memory corruption
8.8CVSS HIGH
Summary
Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2026-100/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-101/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-102/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-103/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-97/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-98/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-99/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068456