CVE-2020-37127: Dnsmasq Dnsmasq-Utils

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Dnsmasq-utils 2.79-1 contains a buffer overflow vulnerability in the dhcp_release utility that allows attackers to cause a denial of service by supplying excessive input. Attackers can trigger a core dump and terminate the dhcp_release process by sending a crafted input string longer than 16 characters.

Affected products

• Dnsmasq Dnsmasq-Utils: version 2.79 only

Published 2026-02-05. Last modified 2026-06-17.