---
cve: "CVE-2020-37127"
severity: "MEDIUM"
cvss: 6.9
epss: "0.2%"
vendor: "dnsmasq"
kev: false
exploited: false
published: "2026-02-05 17:16:07"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T12:31:22+02:00"
---

# CVE-2020-37127

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-37127) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_