CVE-2025-13012: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Race condition in the Graphics component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

Affected products

• Mozilla Firefox: before 115.30.0 (fixed in 115.30.0); before 145.0 (fixed in 145.0); from 140.0, before 140.5.0 (fixed in 140.5.0)

Published 2025-11-11. Last modified 2026-06-17.