CVE-2026-84120 | Mozilla Firefox up to 115.39/140.14/153.1/154 Audio/Video use after free (Nessus ID 342204 / WID-SEC-2026-3132)
A vulnerability classified as critical has been found in Mozilla Firefox up to 115.39/140.14/153.1/154. This issue affects some unknown processing of the component Audio/Video. Performing a manipulation results in use after free.
This vulnerability is cataloged as CVE-2026-84120. It is possible to initiate the attack remotely. There is no exploit available.
It is recommended to upgrade the affected component.