CVE-2026-54099

HIGH EPSS 0.0%

Published Jun 22, 20261w ago · Modified Jun 23, 20261w ago

8.8 CVSS 3.1

High

Published Jun 22, 2026 1w ago

Last Modified Jun 23, 2026 1w ago

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 Details

Base Score

8.8

Exploitability

2.0

Impact

6.0

Vector string

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

Threat Intelligence

EPSS Exploit Probability

0.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-269 Improper Privilege Management Authorization

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.