Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-84138

Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.8%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-84138


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