Medium 5.5Published Feb 5, 2026

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

Updated under an hour ago (Oct 28, 2026, 1:10 AM ET)

Does this affect you?

It affects dnsmasq-utils. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for dnsmasq-utils

Exploited in the last 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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Feb 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

dnsmasq dnsmasq-utils dnsmasq:utils (from the name)	2.79	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.