8.3
High
CVE-2026-54100 A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform
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 and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Versions not published | |
| Red Hat OpenShift for Windows Containers | Versions not published | |
| Red Hat OpenShift for Windows Containers 10.22 1783692800 | earliest → < 1783692800 | 1783692800 |
| Red Hat OpenShift for Windows Containers 10.21 1787065708 | earliest → < 1787065708 | 1787065708 |
| OpenShift Windows Machine Config Operator 10.21 1787065708 | earliest → < 1787065708 | 1787065708 |
| Red Hat OpenShift for Windows Containers 10.19 1789075615 | earliest → < 1789075615 | 1789075615 |
| Red Hat OpenShift for Windows Containers 10.20 1789075603 | earliest → < 1789075603 | 1789075603 |
Other CVEs of Red Hat OpenShift Container Platform 4
The 630 CVEs of Red Hat OpenShift Container Platform 4 →
CVE-2026-123876
Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit truncation
4.4
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CVE-2026-123037
Ansible-core: user module generate_ssh_key follows a symlinked ~/.ssh enabling local privilege escalation (incomplete fix of cve-2024-9902)
6.7
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CVE-2026-82976
Image-customization-controller: unauthenticated plaintext image server with directory listing exposes ignition images containing cluster pull secret
7.1
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CVE-2026-120831
Libslirp: libslirp: queue pointer corruption in if_output() leading to denial of service
6.5
Medium