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Vulnerability record · CVE-2011-3481 · published 14 September 2011

CVE-2011-3481: Cmu cyrus imap server vulnerability

Cmu · Cyrus Imap Server

The index_get_ids function in index.c in imapd in Cyrus IMAP Server before 2.4.11, when server-side threading is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted References header in an e-mail message.

4.3 CVSS 2.0 Medium EPSS 2.1% · top 18.7%
4.3CVSS 2.0 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

The index_get_ids function in index.c in imapd in Cyrus IMAP Server before 2.4.11, when server-side threading is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted References header in an e-mail message.

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

Affected products

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

References

LinkTags
http://bugzilla.cyrusimap.org/show_bug.cgi?id=2772
http://bugzilla.cyrusimap.org/show_bug.cgi?id=3463
http://git.cyrusimap.org/cyrus-imapd/commit/?id=6e776956a1a9dfa58eacdd0ddd52644009eac9e5 Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2012:037
http://www.redhat.com/support/errata/RHSA-2011-1508.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/69842
http://bugzilla.cyrusimap.org/show_bug.cgi?id=2772
http://bugzilla.cyrusimap.org/show_bug.cgi?id=3463
http://git.cyrusimap.org/cyrus-imapd/commit/?id=6e776956a1a9dfa58eacdd0ddd52644009eac9e5 Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2012:037
http://www.redhat.com/support/errata/RHSA-2011-1508.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/69842

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Related vulnerabilities

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

7.5CVE-2011-3208Cmu cyrus imap server memory buffer overflow vulnerabilityStack-based buffer overflow in the split_wildmats function in nntpd.c in nntpd in Cyrus IMAP Server before 2.3.17 and 2.4.x before 2.4.11 allows remo…EPSS 5.4%5.1CVE-2011-1926Cmu cyrus imap server permissions and access controls vulnerabilityThe STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to i…EPSS 4.0%4.4CVE-2009-2632Cmu cyrus imap server memory buffer overflow vulnerabilityBuffer overflow in the SIEVE script component (sieve/script.c), as used in cyrus-imapd in Cyrus IMAP Server 2.2.13 and 2.3.14, and Dovecot 1.0 before…EPSS 0.48%

Source: NIST National Vulnerability Database (record CVE-2011-3481), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.