Vulnerability in Squirrelmail

CVE-2012-2124

functions/imap_general.php in SquirrelMail, as used in Red Hat Enterprise Linux (RHEL) 4 and 5, does not properly handle 8-bit characters in passwords, which allows remote attackers to cause a denial of service (disk consumption) by making many IMAP login attempts with different usernames, leading to the creation of many preference files. NOTE: this issue exists because of an incorrect fix for CVE-2010-2813.

Published 2013-01-18 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.025 (83.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Squirrelmail
Red Hat Enterprise Linux — versions 4, 5

Weakness classification (CWE)

CWE-399

References

secunia.com/advisories/51730 (Vendor Advisory, third-party-advisory)
bugzilla.redhat.com/show_bug.cgi
www.openwall.com/lists/oss-security/2012/04/20/22 (mailing-list)
rhn.redhat.com/errata/RHSA-2013-0126.html (vendor-advisory, Vendor Advisory)