CVE-2026-2777 | Mozilla Firefox up to 147 Messaging System Remote Code Execution (Nessus ID 299964 / WID-SEC-2026-0497)
A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 147. This impacts an unknown function of the component Messaging System. Performing a manipulation results in Remote Code Execution.
This vulnerability is known as CVE-2026-2777. Remote exploitation of the attack is possible. No exploit is available.
It is advisable to upgrade the affected component.