Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-16377

Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 31.3%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-16377


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