CVE-2026-66792
Auth bypass in multicloud-operators-subscription allows privilege escalation and arbitrary resource deployment.
Is CVE-2026-66792 being exploited?
Not confirmed. CVE-2026-66792 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 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-66792?
CVE-2026-66792 is rated Critical with a CVSS score of 9.9. 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-2026-66792?
Yes. A fix has been recorded for CVE-2026-66792. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-66792 affect?
CVE-2026-66792 affects multicloud-operators-subscription, Kubernetes clusters using multicloud-operators, OpenShift/ACM deployments. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-66792?
Apply vendor patch when available; meanwhile restrict Subscription creation and tighten controller SA RBAC.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A managed-cluster user can create a crafted Subscription to escalate to the controller ServiceAccount and deploy resources into any namespace.
Immediate action required