Is CVE-2020-37127 in the CISA KEV catalog?

No. CVE-2020-37127 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-37127?

CVE-2020-37127 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-37127?

CVE-2020-37127 has an EPSS score of 0.18% (8th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-37127?

Upgrade dnsmasq on debian 11 to 2.80-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-37127

MEDIUM

5.5

CVSS v3

NVD

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.

CWE-121Stack-based Buffer Overflow

How to fix

Remediation Available

dnsmasqDebian

Fixed in:2.80-1CVE-2020-37127

dnsmasqUbuntu

Fixed in:2.68-1ubuntu0.2+esm6USN-8311-1

dnsmasq-utilsUbuntu

Fixed in:2.68-1ubuntu0.2+esm6USN-8311-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.18%probability of exploitation in 30 days

8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2009-0927	High	8.8	97%	KEV	Fix
CVE-2020-10924	High	8.8	87%	-	-
CVE-2022-20705	Critical	10.0	80%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-05.