CVE-2015-3240: Libreswan

Medium severity, CVSS 4.3. EPSS: 2.8% chance of exploitation in the next 30 days.

The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet.

Affected products

• Libreswan Libreswan: version 3.14 only

Published 2015-11-09. Last modified 2026-06-17.