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Public proof of conceptFix available

CVE-2020-13401

A public proof of concept exists; no exploitation attested.

  • Published2020-06-02
  • WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Docker Engine before 19.03.11. An attacker in a container, with the CAP_NET_RAW capability, can craft IPv6 router advertisements, and consequently spoof external IPv6 hosts, obtain sensitive information, or cause a denial of service.

Timeline

dates in UTC
  1. 2020-06-0214:15CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
31.x= 31no fix published
32.x= 32no fix published
Broadcom sannav
BranchAffectedFixed in
—all versionsno fix published
Debian debian linux
BranchAffectedFixed in
10.0= 10.0no fix published

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • containerdSUSE:Linux Enterprise Module for Containers 15 SP2all versions · fixed in 1.2.13-5.22.2
  • containerdSUSE:Linux Enterprise Module for Containers 15 SP1all versions · fixed in 1.2.13-5.22.2
  • containerdSUSE:Linux Enterprise Module for Containers 12all versions · fixed in 1.2.13-16.29.1
  • containerdopenSUSE:Leap 15.1all versions · fixed in 1.2.13-lp151.2.12.1
  • dockerSUSE:Linux Enterprise Module for Containers 15 SP2all versions · fixed in 19.03.11_ce-6.34.2
  • dockerSUSE:Linux Enterprise Module for Containers 15 SP1all versions · fixed in 19.03.11_ce-6.34.2
  • dockerSUSE:Linux Enterprise Module for Containers 12all versions · fixed in 19.03.11_ce-98.54.1
  • dockeropenSUSE:Tumbleweedall versions · fixed in 20.10.6_ce-2.1

53 more package ranges on OSV.dev

Vendor advisories

  • CVE-2020-13401 Red Hat Product Security1 known affected

    docker: IPv6 router advertisements allow for MitM attacks

    docker.src as a component of Red Hat Enterprise Linux 7

Full record on NVD

Fix

  1. Workaround from the vendor Red Hat Product Security CVE-2020-13401 · 1 productPrevent untrusted, non-privileged containers from running with CAP_NET_RAW.
  2. No fix planned, says the vendor Red Hat Product Security CVE-2020-13401 · 1 productWill not fix

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Published
2020-06-02
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-qrrc-ww9x-r43g

Frequently asked questions

What is CVE-2020-13401?

An issue was discovered in Docker Engine before 19.03.11. An attacker in a container, with the CAP_NET_RAW capability, can craft IPv6 router advertisements, and consequently spoof external IPv6 hosts, obtain sensitive information, or cause a denial of service.

Is CVE-2020-13401 actively exploited?

Active exploitation of CVE-2020-13401 has not been confirmed. Its EPSS score was 2.9% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-13401?

CVE-2020-13401 has a CVSS v3 base score of 6 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L.

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Sources for this record