XAPI is the management API for Xen-based virtualization (XenServer/Citrix/XCP-ng). A critical flaw that can corrupt or render the management DB unusable risks widespread cloud/hypervisor outages across enterprises.
CVE-2025-58146
XAPI DB input flaws allow DB corruption, event-thread crash and persistent denial of service.
Is CVE-2025-58146 being exploited?
Not confirmed. CVE-2025-58146 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 0.18% probability of exploitation in the next 30 days.
How severe is CVE-2025-58146?
CVE-2025-58146 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-2025-58146?
Yes. A fix has been recorded for CVE-2025-58146. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-58146 affect?
CVE-2025-58146 affects XAPI (Xen API), XenServer / Citrix Hypervisor, XCP-ng, Cloud platforms using XAPI. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-58146?
Restrict XAPI access, backup DB, implement input filtering, monitor logs; apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker can insert crafted strings via XAPI to crash the DB event thread, corrupt the DB, prevent DB loading, and cause persistent DoS and potential data loss.
Immediate action required