CVE-2026-54100
WMCO SSH host key verification missing; attacker can steal Windows node creds.
Is CVE-2026-54100 being exploited?
Not confirmed. CVE-2026-54100 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-54100?
CVE-2026-54100 is rated High with a CVSS score of 8.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-54100?
Yes. A fix has been recorded for CVE-2026-54100. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54100 affect?
CVE-2026-54100 affects Red Hat OpenShift WMCO, Windows worker nodes managed by WMCO. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54100?
Monitor for WMCO fixes; patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Intercepted WMCO SSH can capture WICD/kubelet credentials, enabling Windows node identity compromise in the cluster.
Patch when possible