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CVE-2026-84641

Information disclosure due to malicious IMAP server response PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Mozilla / Thunderbirdunaffected 140.15 through 140.*; unaffected 153.2 through 153.*; unaffected 155 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.