CVE-2026-84640
NONE—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
—CWE
Description
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.
Affected routers (0)
No routers currently mapped to this CVE in our database.