CVE-2026-23560
XAPI RBAC flaws let vm-admin modify dom0 files and mark VMs as system/storage domains
Is CVE-2026-23560 being exploited?
Not confirmed. CVE-2026-23560 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 0.17% probability of exploitation in the next 30 days.
How severe is CVE-2026-23560?
CVE-2026-23560 is rated Critical with a CVSS score of 9.4. 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-2026-23560?
Yes. A fix has been recorded for CVE-2026-23560. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-23560 affect?
CVE-2026-23560 affects XAPI, XenServer, Citrix Hypervisor, XCP. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-23560?
Revoke/unbind untrusted vm-admins, restrict vm-admin roles, monitor dom0 and storage, apply vendor patch ASAP.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A vm-admin can read/write arbitrary dom0 files, access host PCI passthrough, hide or persist VMs, enabling host compromise, data theft, and service/storage disruption.
Immediate action required