Vulnerability DatabaseCVE-2020-37127
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CVE-2020-37127
February 05, 2026
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.
Affected Packages
https://github.com/imp/dnsmasq.git (GITHUB):
Affected version(s) >=v2.0 <v2.80test6
Fix Suggestion:
Update to version v2.80test6
Related Resources (3)
https://www.vulncheck.com/advisories/dnsmasq-utils-dhcprelease-denial-of-service
https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1
https://www.exploit-db.com/exploits/48301
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CVSS v4
Base Score:
6.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Stack-based Buffer Overflow
CWE-121
EPSS
Base Score:
0.02