CVE-2024-29943: Mozilla Firefox

Critical severity, CVSS 9.8. EPSS: 22.9% chance of exploitation in the next 30 days.

An attacker was able to perform an out-of-bounds read or write on a JavaScript object by fooling range-based bounds check elimination. This vulnerability affects Firefox < 124.0.1.

Affected products

• Mozilla Firefox: before 124.0.1 (fixed in 124.0.1)

Published 2024-03-22. Last modified 2026-06-17.