VULNERABILITY INTELLIGENCE

CVE-2026-84120

CVSS score5.4 MEDIUM

EPSS probability0.22%

CISA KEVNot currently listed

Published2026-09-01

Last modified2026-09-02

Description

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.