CVE-2026-54099
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
43/100
Published: 2026-06-22
Modified: 2026-11-04
First seen: 2026-11-04
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Changed
C:
High
I:
High
A:
High
Description
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| redhat | openshift_container_platform | 4.0 – 4.22.1 |
| redhat | windows_machine_config_operator | - |
References & Advisories (8)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT
Vendor Advisory