CVE-2026-16357
CRITICAL severity · CVSS 9.8 · Memory corruption
9.8CVSS CRITICAL
Summary
Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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/mfsa2026-68/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-69/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-70/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-71/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-72/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=2053326