CVE-2026-54100: Red Hat Openshift Container Platform

High severity, CVSS 8.3. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Openshift Container Platform: from 4.0, up to and including 4.22.1
• Red Hat Windows Machine Config Operator: affected versions not specified

Published 2026-06-22. Last modified 2026-09-09.