Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-74939

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 22.7%
CVSS Severity
CVSS v3 Score 8.8
Products affected by CVE-2026-74939


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