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Vulnerabilities CVE-2026-54099

CVE-2026-54099

High
Open
TLP:CLEAR

Windows-machine-config-operator: windows-machine-config-operator: wicd csr extra-organization allows privilege escalation to system:masters

NVD CVE.org
Critical Infrastructure

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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.

Details

CVSS Score
8.8
EPSS Score
0.11%

1.5th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Jun 22, 2026
Last Modified
Jul 28, 2026
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