CVE-2025-27463CWE-276

CVE-2025-27463

published July 9, 2026

CVSS
9.4
EPSS
0%
Percentile
4.6
In the wild
Unconfirmed
What it is

[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

The record
Technical detail
CVSS
9.4 · NONE
CVSS v4.0
Not supplied
EPSS
0.00158 · 4.6th percentile
Weakness
CWE-276 · Incorrect Default Permissions
Published
2026-07-09T20:16Z
References (1)
EPSS history
Timeline
  • 09 JUL 14:29Z
    WinPVDrivers: Excessive permissions on user-exposed devices
    cvelistv5