CVE-2026-54099

Published Jun 22, 2026

Last updated 8 days ago

CVSS high 8.8

Overview

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.
Source
secalert@redhat.com
NVD status
Analyzed
Products
openshift_container_platform, windows_machine_config_operator

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.8
Impact score
6
Exploitability score
2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secalert@redhat.com
CWE-269
0b0ca135-0b70-47e7-9f44-1890c2a1c46c
CWE-269

Social media

Hype score
Not currently trending

  1. 🚨*CVE* CVE-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 Certificate Signi… https://t.co/0NtOVrIK61 ----- Traducción: CVE-2026-54099 Se … https://t.co/utmtNg

    @infoflowcloud

    22 Jun 2026

    35 Impressions

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Configurations

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References

Sources include official advisories and independent security research.