CVE-2025-6424 | Mozilla Firefox up to 139 FontFaceSet use after free

June 24, 2025 Yanac

A vulnerability was found in Mozilla Firefox up to 139. It has been rated as critical. Affected by this issue is some unknown functionality of the component FontFaceSet. The manipulation leads to use after free.

This vulnerability is handled as CVE-2025-6424. An attack has to be approached locally. There is no exploit available.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More