CVE-2024-5694: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

An attacker could have caused a use-after-free in the JavaScript engine to read memory in the JavaScript string section of the heap. This vulnerability affects Firefox < 127.

Affected products

• Mozilla Firefox: before 127.0 (fixed in 127.0)

Published 2024-06-11. Last modified 2026-06-17.