CVE-2025-27462
Windows Xen PV drivers expose interfaces allowing local privilege escalation.
Is CVE-2025-27462 being exploited?
Not confirmed. CVE-2025-27462 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 0.16% probability of exploitation in the next 30 days.
How severe is CVE-2025-27462?
CVE-2025-27462 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-2025-27462?
Yes. A fix has been recorded for CVE-2025-27462. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-27462 affect?
CVE-2025-27462 affects Windows PV drivers (XenCons - CVE-2025-27462), XenIface (CVE-2025-27463), XenBus (CVE-2025-27464), Windows guests on Xen hypervisors. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-27462?
Apply vendor patch when released; restrict PV device access and audit local accounts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local unprivileged users can access PV driver interfaces lacking security descriptors to escalate to SYSTEM (local privilege escalation).
Immediate action required