CVE-2026-54100
Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theft
- State
- Published
- Severity
- 8.3 High
- Published
- Jun 22, 2026
- Updated
- Oct 14, 2026
- Reserved
- Jun 11, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.3 High | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | redhat |
| 3.1 | 8.3 High | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-295 Improper Certificate Validation
Affected Products
| Product | Versions |
|---|---|
Red Hat OpenShift for Windows Containers 10.19Red Hat |
|
Red Hat OpenShift for Windows Containers 10.20Red Hat |
|
Red Hat OpenShift for Windows Containers 10.21Red Hat |
|
Red Hat OpenShift for Windows Containers 10.22Red Hat |
|
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat |
References
- RHSA-2026:47173vendor-advisory
- RHSA-2026:61780vendor-advisory
- RHSA-2026:81397vendor-advisory
- RHSA-2026:82440vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-54100vdb-entry
- RHBZ#2487953issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54100.json
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