CVE-2026-54099
Windows-machine-config-operator: windows-machine-config-operator: wicd csr extra-organization allows privilege escalation to system:masters
CVSS Score
8.8
EPSS Score
0.1%
EPSS Percentile
1th
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.
| CWE | CWE-269 |
| Vendor | red hat |
| Product | red hat openshift for windows containers 10.22 |
| Published | Jun 22, 2026 |
| Last Updated | Jul 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat OpenShift for Windows Containers 10.22
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:47173 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-54099 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2487950 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54099.json