CVE-2020-6071: debian debian_linux Uncontrolled Recursion
Vulnerability summary
CVE-2020-6071 is a high (CVSS 7.5) Uncontrolled Recursion vulnerability in debian debian_linux. EPSS estimates a 2.50% chance of exploitation in the next 30 days, higher than 84.5% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 3 · Related 1Timeline
- 24-03-2020PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
An exploitable denial-of-service vulnerability exists in the resource record-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in mDNS messages, the compression pointer is followed without checking for recursion, leading to a denial of service. An attacker can send an mDNS message to trigger this vulnerability.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.50%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
+0.05 pp
From 2.46% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian3 products
- libmicrodns< 0.2.0-1
- vlc< 3.0.8-4
- debian_linuxEOL9.0
Ubuntu2 products
- libmicrodns< 0.0.8-1ubuntu0.1~esm1
- vlc< 3.0.8-0ubuntu18.04.1+esm3
Videolabs1 product
- libmicrodns0.1.0
3 vendors · 6 products
References
7 links
- talosintelligence.com/vulnerability_reports/TALOS-2020-0994X Refsource MISCREPORTExploitTechnical DescriptionThird Party Advisory