CVE-2026-54099
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 8.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-269 · Improper privilege management
- Record status
- Modified
Affected
- Redhat Openshift Container Platform < 4.22.1
- Redhat Windows Machine Config Operator
Attack profile CVSS 3.1 · 8.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-54099.md and follow it. Check whether this project is affected by CVE-2026-54099. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://access.redhat.com/security/cve/CVE-2026-54099
- https://bugzilla.redhat.com/show_bug.cgi?id=2487950
- https://access.redhat.com/security/cve/CVE-2026-54099
- https://bugzilla.redhat.com/show_bug.cgi?id=2487950
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54099.json
References
- https://access.redhat.com/errata/RHSA-2026:47173
- https://access.redhat.com/errata/RHSA-2026:61780
- https://access.redhat.com/errata/RHSA-2026:81397
- https://access.redhat.com/errata/RHSA-2026:82440
- https://access.redhat.com/errata/RHSA-2026:94562
- https://access.redhat.com/security/cve/CVE-2026-54099
- https://bugzilla.redhat.com/show_bug.cgi?id=2487950
- https://access.redhat.com/errata/RHSA-2026:47173
- https://access.redhat.com/errata/RHSA-2026:61780
- https://access.redhat.com/security/cve/CVE-2026-54099
- https://bugzilla.redhat.com/show_bug.cgi?id=2487950
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54099.json