CVE-2025-27464

9.4 criticalEPSS 0.2%

Critical (9.4). EPSS 0.2% chance of exploitation in the next 30 days.

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. These are: 1. XenCons, CVE-2025-27462 2. XenIface, CVE-2025-27463 3. XenBus, CVE-2025-27464

Severity

CVSS 4.0

9.4 critical

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
CWE: CWE-276
Published: 2026-07-09
Modified: 2026-09-29
Record from: the NVD, synced 2026-10-19

References

https://xenbits.xen.org/xsa/advisory-468.html

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