Search: CVE-2026-84639

1 threat

Severity	CVSS	Signals	Threat	Source	Published	Score and star
Critical	9.1	EPSS 0.3%	CVE-2026-84639Mozilla Thunderbird · CWE-457 Critical9.1EPSS 0.3%2026-09-01CVE Database V5CVE-2026-84639 CVE-2026-84639 is a critical vulnerability in Mozilla Thunderbird where triggering an error condition in certain MIME bodies causes uninitialized memory to be used. This flaw could lead to a high impact on confidentiality and availability. The issue has been fixed in Thunderbird versions 155, 140.15, and 153.2. EPSS 0.3%Vulnerability CWE-457 #ghsa-4x6j-cpvp-7f2c	CVE Database V5	2026-09-01

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