CVE-2026-92240 | BDVDB-2026-374649 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-09-15Record published in the CVE List.
2. Version 22026-09-22Most recent update recorded in the CVE List.