CVE-2026-124940 | Mozilla Firefox up to 153.6/159 File privileges management

November 10, 2026 Yanac

A vulnerability was found in Mozilla Firefox up to 153.6/159. It has been declared as critical. This issue affects some unknown processing of the component File Handler. Such manipulation leads to improper privilege management.

This vulnerability is uniquely identified as CVE-2026-124940. The attack can be launched remotely. No exploit exists.

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