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A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.
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[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift for Windows Containers","defaultStatus":"affected","cpes":["cpe:/a:redhat:windows_machine_config"]}]
[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4-wincw/windows-machine-config-rhel8-operator","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4-wincw/windows-machine-config-rhel9-operator","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift for Windows Containers","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4-wincw/windows-machine-config-rhel9-operator","cpes":["cpe:/a:redhat:windows_machine_config"]}]
Initial Analysis by NIST7/08/2026 11:10:50 AM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (including) 4.22.1
*cpe:2.3:a:redhat:windows_machine_config_operator:-:*:*:*:*:*:*:*
Added
Reference Type
Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-54100 Types: Vendor Advisory
Added
Reference Type
Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2487953 Types: Issue Tracking, Vendor Advisory
[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift for Windows Containers","defaultStatus":"affected","cpes":["cpe:/a:redhat:windows_machine_config"]}]
New CVE Received from Red Hat, Inc.6/22/2026 10:17:40 AM
Action
Type
Old Value
New Value
Added
Description
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.
[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4-wincw/windows-machine-config-rhel8-operator","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4-wincw/windows-machine-config-rhel9-operator","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift for Windows Containers","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4-wincw/windows-machine-config-rhel9-operator","cpes":["cpe:/a:redhat:windows_machine_config"]}]
Quick Info
CVE Dictionary Entry: CVE-2026-54100 NVD
Published Date: 06/22/2026 NVD
Last Modified: 07/14/2026
Source: Red Hat, Inc.
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