Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-92239

A maliciously constructed IMAP line could cause an out-of-bounds buffer read. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 36.6%
CVSS Severity
CVSS v3 Score 8.1
Products affected by CVE-2026-92239


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