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Vulnerability record · CVE-2011-3372 · published 24 December 2011

CVE-2011-3372: Cyrus imapd improper authentication vulnerability

Cyrus · Imapd

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.

7.5 CVSS 2.0 High EPSS 3.3% · top 12.0% CWE-287 · Improper authentication
7.5CVSS 2.0 base score
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cyrusimap.org/mediawiki/index.php/Latest_Updates
http://git.cyrusimap.org/cyrus-imapd/commit/?id=77903669e04c9788460561dd0560b9c916519594
http://secunia.com/advisories/46093 Vendor Advisory
http://secunia.com/secunia_research/2011-68 Vendor Advisory
http://securitytracker.com/id?1026363
http://www.debian.org/security/2011/dsa-2318
http://www.mandriva.com/security/advisories?name=MDVSA-2011:149
http://www.redhat.com/support/errata/RHSA-2011-1508.html
https://bugzilla.redhat.com/show_bug.cgi?id=740822
http://cyrusimap.org/mediawiki/index.php/Latest_Updates
http://git.cyrusimap.org/cyrus-imapd/commit/?id=77903669e04c9788460561dd0560b9c916519594
http://secunia.com/advisories/46093 Vendor Advisory
http://secunia.com/secunia_research/2011-68 Vendor Advisory
http://securitytracker.com/id?1026363
http://www.debian.org/security/2011/dsa-2318
http://www.mandriva.com/security/advisories?name=MDVSA-2011:149
http://www.redhat.com/support/errata/RHSA-2011-1508.html
https://bugzilla.redhat.com/show_bug.cgi?id=740822

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-3372), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.