Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Openshift Container Platform | >= 4.0, <= 4.22.1 |
| Redhat | Windows Machine Config Operator | - |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:47173
- https://access.redhat.com/security/cve/CVE-2026-54100Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2487953Issue TrackingVendor Advisory
- https://access.redhat.com/errata/RHSA-2026:47173
- https://access.redhat.com/security/cve/CVE-2026-54100Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2487953Issue TrackingVendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54100.jsonVendor Advisory
FAQ
What is CVE-2026-54100?
CVE-2026-54100 is a vulnerability with a CVSS score of 8.3 (HIGH). 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 ho...
How severe is CVE-2026-54100?
CVE-2026-54100 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54100?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Openshift Container Platform, Redhat Windows Machine Config Operator.