CVE-2012-4426: Mcrypt

Medium severity, CVSS 6.8. EPSS: 4.7% chance of exploitation in the next 30 days.

Multiple format string vulnerabilities in mcrypt 2.6.8 and earlier might allow user-assisted remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via vectors involving (1) errors.c or (2) mcrypt.c.

Affected products

• Mcrypt Mcrypt: up to and including 2.6.8; version 2.6.4 only; version 2.6.5 only; version 2.6.6 only; version 2.6.7 only

Published 2012-11-21. Last modified 2026-06-16.