9.8

CVE-2020-6072: debian debian_linux Double Free

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2020-6072DEBIAN-CVE-2020-6072
Published 24-03-2020Last modified 08-10-2026
Open JSON

Vulnerability summary

CVE-2020-6072 is a critical (CVSS 9.8) Double Free vulnerability in debian debian_linux. EPSS estimates a 3.80% chance of exploitation in the next 30 days, higher than 89.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
3.80%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 3 · Related 1
DSA-4671-1MGASA-2020-0203USN-7239-1

Timeline

  1. 24-03-2020
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

3.80%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

+0.07 pp

From 3.73% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.80%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (talosintelligence.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian3 products
Ubuntu2 products
  • libmicrodns< 0.0.8-1ubuntu0.1~esm1
  • vlc< 3.0.8-0ubuntu18.04.1+esm3
Videolabs1 product

3 vendors · 6 products

References

7 links