CVE-2026-54100Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theft
Updated under an hour ago ()
Does this affect you?
It affects Red Hat OpenShift for Windows Containers 10.19 and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-295
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat OpenShift for Windows Containers 10.19 redhat:windows_machine_config | from 1789075615 not affected | CNA record |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CNA record |
Red Hat Red Hat OpenShift for Windows Containers 10.21 redhat:windows_machine_config | from 1787065708 not affected | CISA ADP |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CISA ADP |
redhat openshift_container_platform redhat:openshift_container_platform | from 4.0 through 4.22.1 | NVD |
redhat windows_machine_config_operator redhat:windows_machine_config_operator | all versions | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:47173vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:61780vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:81397vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:82440vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-54100vdb-entry, x-refsource-redhat, vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2487953issue-tracking, x-refsource-redhat, vendor-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54100.jsonvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.