Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-54099 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:47173 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:61780 redhat-SADP
https://access.redhat.com/security/cve/CVE-2026-54099 redhat-SADPVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2487950 redhat-SADPIssue TrackingVendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54099.json redhat-SADPVendor Advisory

see all 9 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-269Improper Privilege Managementredhat-SADP
CWE-269Improper Privilege Management[email protected]

Affected Products

ProductVersions
redhat openshift container platform
>= 4.0, < 4.22.1

CPE

  • cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat windows machine config operator
All versions

CPE

  • cpe:2.3:a:redhat:windows_machine_config_operator:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

15 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-54099
NVD Published Date:
Jun 22, 2026
NVD Last Modified:
Sep 9, 2026
Source:
[email protected]
CVE-2026-54099 Details - Not Deferred