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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat OpenShift for Windows Containers 10.19 | — | — |
| Red Hat | Red Hat OpenShift for Windows Containers 10.20 | — | — |
| Red Hat | Red Hat OpenShift for Windows Containers 10.21 | — | — |
| Red Hat | Red Hat OpenShift for Windows Containers 10.22 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
Advisories 1
- WID-SEC-2026-2552 Red Hat OpenShift für Windows Containers (WMCO): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 3, 2026
References
- RHSA-2026:47173 vendor-advisory
- RHSA-2026:61780 vendor-advisory
- RHSA-2026:81397 vendor-advisory
- RHSA-2026:82440 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-54100 vdb-entry
- RHBZ#2487953 issue-tracking