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CVE-2026-92240

Out-of-bounds read in IMAP response parser PUBLISHED

Description (CNA)

A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged '* ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

Affected (CNA)

Vendor / productVersions
Mozilla / Thunderbirdunaffected 140.16 through 140.*; unaffected 153.3 through 153.*; unaffected 156 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.