CVE-2026-84641
NONE—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
—CWE
Description
A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. 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.