CVE-2020-37127

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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) Dnsmasq-utils 2.79-1 contiene una vulnerabilidad de desbordamiento de búfer en la utilidad dhcp_release que permite a los atacantes causar una denegación de servicio al proporcionar una entrada excesiva. Los atacantes pueden activar un volcado de memoria y terminar el proceso dhcp_release enviando una cadena de entrada manipulada de más de 16 caracteres.

05 Feb 2026, 20:15

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~9.8~~	v2 : unknown v3 : 5.5

05 Feb 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-05 17:16

Updated : 2026-04-15 00:35

NVD link : CVE-2020-37127

Mitre link : CVE-2020-37127

CVE.ORG link : CVE-2020-37127

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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