CVE-2020-37127

MEDIUM EPSS 7.9%
Published Feb 5, 20264mo ago · Modified Jun 17, 20262w ago
6.9 CVSS 4.0
Medium
Find Similar
Published Feb 5, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
6.9
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
7.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-121

References 3

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.