CVE-2024-2605: Mozilla Firefox

Medium severity, CVSS 5.9. EPSS: 0.6% chance of exploitation in the next 30 days.

An attacker could have leveraged the Windows Error Reporter to run arbitrary code on the system escaping the sandbox. *Note:* This issue only affected Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

Affected products

• Mozilla Firefox: before 115.9.0 (fixed in 115.9.0); before 124.0 (fixed in 124.0)
• Mozilla Thunderbird: before 115.9.0 (fixed in 115.9.0)

Published 2024-03-19. Last modified 2026-06-17.