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CVE-2026-54099

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

Published: Jun 22, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-269
NVD MITRE
8.8CVSSHIGH
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-269

Affected Products

Red Hat OpenShift Container Platform 4Red Hat
SaaSSaaS Service
Cloud & SaaS / container-orchestration
Red Hat OpenShift for Windows ContainersRed Hat
On-prem
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Workaround Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-54099
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2487950
bugzilla.redhat.com

Timeline

Published
Jun 22, 2026
Last Updated
Jun 22, 2026

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