How severe is CVE-2026-54100?

CVE-2026-54100 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-54100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-54100?

CVE-2026-54100 primarily affects Redhat Openshift Container Platform. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-54100?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-54100 have an EU (EUVD) identifier?

Yes. CVE-2026-54100 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38234.

When was CVE-2026-54100 published?

CVE-2026-54100 was published on 2026-06-22 and last updated on 2026-07-08.

CVE-2026-54100

CVE-2026-54100 is a high-severity vulnerability in Redhat Openshift Container Platform with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38234
Weakness: CWE-295
Affected product: Redhat Openshift Container Platform
Published: 2026-06-22
Last modified: 2026-07-08

Description

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.

Frequently asked questions

What is CVE-2026-54100?: A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.
How severe is CVE-2026-54100?: CVE-2026-54100 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-54100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-54100?: CVE-2026-54100 primarily affects Redhat Openshift Container Platform. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-54100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-54100 have an EU (EUVD) identifier?: Yes. CVE-2026-54100 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38234.
When was CVE-2026-54100 published?: CVE-2026-54100 was published on 2026-06-22 and last updated on 2026-07-08.

References

Affected products (2)

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

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