CVE-2010-2156: ISC Dhcp

Medium severity, CVSS 5.0. EPSS: 76.4% chance of exploitation in the next 30 days.

ISC DHCP 4.1 before 4.1.1-P1 and 4.0 before 4.0.2-P1 allows remote attackers to cause a denial of service (server exit) via a zero-length client ID.

Affected products

• ISC Dhcp: version 4.1.0 only; version 4.1.1 only; version 4.0.0 only; version 4.0.1 only; version 4.0.2 only

Published 2010-06-07. Last modified 2026-06-16.