CVE-2026-16387 | Mozilla Firefox up to 140.12/152 Networking improper isolation or compartmentalization

July 21, 2026 Yanac

A vulnerability has been found in Mozilla Firefox up to 140.12/152 and classified as critical. Affected by this issue is some unknown functionality of the component Networking. This manipulation causes improper isolation or compartmentalization.

This vulnerability is tracked as CVE-2026-16387. The attack is possible to be carried out remotely. No exploit exists.VulDB Recent EntriesRead More