CVE-2020-10749

mediumpriority · track · 35EPSS 0.021 · 81 %ileexploit · PoCEUFRUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

2.09% (81st) EPSS

CVSS 6 · medium

Is it mine?

7 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06mediumAV:N/AC:M/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 6.8 · impact 6.4

v3.16mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:Lprimary · NVD / NIST USexploitability 1.8 · impact 3.7

v3.16mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:Lsecondary · ENISA EU

v3.16mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:Lsecondary · secalert@redhat.com USexploitability 1.8 · impact 3.7

v3.16mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:Lsecondary · OSV

v3.15.7mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-300USCWE-300US

exploits (1)

Public proof-of-concept and weaponised exploit code.

knqyf263/CVE-2020-10749CVE-2020-10749 PoC (Kubernetes MitM attacks via IPv6 rogue router advertisements)PoC · poc_in_github

affected products (7)

Products and version ranges known to be affected.

Red Hat containernetworking/plugins≤ all containernetworking/plugins versions before version 0.8.6enisa_euvdEU
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
linuxfoundation cni network plugins< 0.8.6nvdUScpe:2.3:a:linuxfoundation:cni_network_plugins:*:*:*:*:*:*:*:*
redhat enterprise linux= 7.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 8.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat openshift container platform= 4.0nvdUScpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*
Go github.com/containernetworking/plugins< 0.8.6osvUSpkg:golang/github.com/containernetworking/plugins

advisories (3)

Vendor and ecosystem advisories describing this.

GHSA-fx6x-h9g4-56f8containernetworking/plugins vulnerable to MitM attacks2022-05-24ghsa · osvUS
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.
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
GO-2023-1915containernetworking/plugins vulnerable to MitM attacks in github.com/containernetworking/plugins2024-08-20vendor · osvUS
containernetworking/plugins vulnerable to MitM attacks in github.com/containernetworking/plugins

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd certfr NVD CVE.org MITRE

published 2020-06-03modified 2026-06-17

references (34)

External citations — patches, advisories, analysis.

scry

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