CVE-2026-74964

CriticalCVSS 9.8

Published: 18/08/2026(UTC)Updated: 19/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.16%

5th percentile - higher than 5% of all known CVEs

Summary

Integer overflow in the Graphics component. Fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

Risk Assessment

May lead to crashes or potentially unauthorized code execution, posing a security risk.

Recommendation

Update Firefox and Thunderbird to versions that include the fix.

Original NVD description (English source)

Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.