CVE-2003-0031: Mcrypt Libmcrypt

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

Affected products

• Mcrypt Libmcrypt: version 2.5.1_r4 only; version 2.5.2 only; version 2.5.3 only; version 2.5_.0 only

Published 2003-01-17. Last modified 2026-06-16.