CVE-2026-84640 (GCVE-0-2026-84640)
Vulnerability from cvelistv5
Published
2026-09-01 21:33
Modified
2026-09-02 18:48
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
A maliciously constructed mail header could lead to a one byte read past the end of a buffer. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
References
Impacted products
Vendor Product Version
Mozilla Thunderbird Unaffected: 140.15
Unaffected: 153.2
Unaffected: 155
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