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CVE Vulnerability Details :
CVE-2020-37127
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-05 Feb, 2026 | 16:13
Updated At-05 Feb, 2026 | 21:18
Rejected At-
▼CVE Numbering Authority (CNA)
dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service

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 Products
Vendor
dnsmasq
Product
dnsmasq-utils
Default Status
unaffected
Versions
Affected
  • 2.79
Problem Types
TypeCWE IDDescription
CWECWE-121Stack-based Buffer Overflow
Type: CWE
CWE ID: CWE-121
Description: Stack-based Buffer Overflow
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
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
3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
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
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Josue Encinar
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
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
Hyperlink: https://www.exploit-db.com/exploits/48301
Resource:
exploit
Hyperlink: https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1
Resource:
product
Hyperlink: https://www.vulncheck.com/advisories/dnsmasq-utils-dhcprelease-denial-of-service
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found