CVE-2020-10749

Name: CVE-2020-10749
Creator: NVD / NIST
Published: 2020-06-03T14:15:12.47+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 2.41%

Last modified Jun 17, 2026

CVE-2020-10749 is a medium-severity vulnerability rated 6/10 on the CVSS scale. A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious container can exploit this flaw by sending rogue IPv6 router advertisements to the host or other containers, to redirect traffic to the malicious container.. EPSS estimates a 2.41% chance of exploitation in the next 30 days.

Description

A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious container can exploit this flaw by sending rogue IPv6 router advertisements to the host or other containers, to redirect traffic to the malicious container.

Metrics

CVSS 3.1

6/10

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

EPSS Probability

2.41%

82.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-300

Affected Software

Vendor	Product	Versions
Linuxfoundation	Cni Network Plugins	< 0.8.6
Redhat	Openshift Container Platform	4.0
Fedoraproject	Fedora	32
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00063.htmlBroken Link, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00065.htmlBroken Link, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10749Issue Tracking, Third Party Advisory
https://groups.google.com/forum/#%21topic/kubernetes-security-announce/BMb_6ICCfp8
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DV3HCDZYUTPPVDUMTZXDKK6IUO3JMGJC/
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00063.htmlBroken Link, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00065.htmlBroken Link, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10749Issue Tracking, Third Party Advisory
https://groups.google.com/forum/#%21topic/kubernetes-security-announce/BMb_6ICCfp8
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DV3HCDZYUTPPVDUMTZXDKK6IUO3JMGJC/

Timeline

Published: Jun 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10749?

How severe is CVE-2020-10749?

CVE-2020-10749 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 2.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10749?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10749?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST