CVE-2026-92021 | Mozilla Firefox up to 140.15 JIT use after free

September 15, 2026 Yanac

A vulnerability labeled as critical has been found in Mozilla Firefox up to 140.15. This vulnerability affects unknown code of the component JIT. Executing a manipulation can lead to use after free.

This vulnerability is handled as CVE-2026-92021. The attack can be executed remotely. There is not any exploit available.

The affected component should be upgraded.VulDB Recent EntriesRead More