---
id: CVE-2020-6072
title: >-
  An exploitable code execution vulnerability exists in the label-parsing
  functionality of Videolabs libmicrodns 0.1.0
summary: >-
  An exploitable code execution vulnerability exists in the label-parsing
  functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels
  in mDNS messages, the rr_decode function's return value is not checked,
  leading to a dou…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-415
vendor: videolabs
product: libmicrodns
affected:
  - libmicrodns = 0.1.0
  - debian_linux = 9.0
published: '2020-03-24'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:17:01.530'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-6072'
references:
  - url: 'https://security.gentoo.org/glsa/202005-10'
    label: talos-cna@cisco.com
  - url: 'https://talosintelligence.com/vulnerability_reports/TALOS-2020-0995'
    label: talos-cna@cisco.com
  - url: 'https://www.debian.org/security/2020/dsa-4671'
    label: talos-cna@cisco.com
  - url: 'https://security.gentoo.org/glsa/202005-10'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://talosintelligence.com/vulnerability_reports/TALOS-2020-0995'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2020/dsa-4671'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.03799
epssPercentile: 0.89728
ingestedAt: '2026-10-08T23:16:47.304Z'
---

## Overview

An exploitable code execution vulnerability exists in the label-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in mDNS messages, the rr_decode function's return value is not checked, leading to a double free that could be exploited to execute arbitrary code. An attacker can send an mDNS message to trigger this vulnerability.

## Affected

- `libmicrodns = 0.1.0`
- `debian_linux = 9.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.