Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-84120

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 12.6%
CVSS Severity
CVSS v3 Score 5.4
Products affected by CVE-2026-84120


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