CVE-2013-4564: Libreswan

Medium severity, CVSS 5.0. EPSS: 2.7% chance of exploitation in the next 30 days.

Libreswan 3.6 allows remote attackers to cause a denial of service (crash) via a small length value and (1) no version or (2) an invalid major number in an IKE packet.

Affected products

• Libreswan Libreswan: version 3.6 only

Published 2014-01-07. Last modified 2026-06-16.