CVE-2024-4775: Mozilla Firefox

Medium severity, CVSS 5.9. EPSS: 0.2% chance of exploitation in the next 30 days.

An iterator stop condition was missing when handling WASM code in the built-in profiler, potentially leading to invalid memory access and undefined behavior. *Note:* This issue only affects the application when the profiler is running. This vulnerability affects Firefox < 126.

Affected products

• Mozilla Firefox: before 126.0 (fixed in 126.0)

Published 2024-05-14. Last modified 2026-06-17.