CVE-2020-37127 MEDIUM

CVE-2020-37127: dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service

Vendor Dnsmasq
Product dnsmasq-utils
Weakness CWE-121
Published February 5, 2026
Last update February 5, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 5, 2026 CVE published
February 5, 2026 Record updated