CVE-2026-54099
published 2026-06-22CVE-2026-54099: A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a…
PriorityP345high8.8CVSS 3.1
AVLACLPRLUINSCCHIHAH
EPSS
0.07%
0.1th percentile
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| openshift4-wincw | windows-machine-config-rhel8-operator | — | — |
| openshift4-wincw | windows-machine-config-rhel9-operator | — | — |
| redhat | openshift_container_platform | >= 4.0 < 4.22.1 | 4.22.1 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vendor_redhat8.8HIGH
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Red Hat
windows-machine-config-operator: windows-machine-config-operator: WICD CSR extra-Organization allows privilege escalation to system:masters
vendor_redhat·2026-06-10·CVSS 8.8
CVE-2026-54099 [HIGH] CWE-269 windows-machine-config-operator: windows-machine-config-operator: WICD CSR extra-Organization allows privilege escalation to system:masters
windows-machine-config-operator: windows-machine-config-operator: WICD CSR extra-Organization allows privilege escalation to system:masters
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover.
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-
GHSA
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform.
ghsa_unreviewed·2026-06-22
CVE-2026-54099 [HIGH] CWE-269 A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform.
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover.
No detection rules found.
No public exploits indexed.
2026-06-22
Published