CVE-2011-3372: Cyrus Imapd

High severity, CVSS 7.5. EPSS: 3.3% chance of exploitation in the next 30 days.

imap/nntpd.c in the NNTP server (nntpd) for Cyrus IMAPd 2.4.x before 2.4.12 allows remote attackers to bypass authentication by sending an AUTHINFO USER command without sending an additional AUTHINFO PASS command.

Affected products

• Cyrus Imapd: up to and including 2.4.11

Published 2011-12-24. Last modified 2026-06-16.