CVE-2020-37127

dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service

CVSS 6.9 MEDIUMEPSS 0.2%CWE-121

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.9EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

dnsmasq · dnsmasq-utils

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References

https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1 https://www.exploit-db.com/exploits/48301 https://www.vulncheck.com/advisories/dnsmasq-utils-dhcprelease-denial-of-service