CVE-2025-27463
WinPVDrivers: Excessive permissions on user-exposed devices
- State
- Published
- Severity
- 9.4 Critical
- Published
- Jul 9, 2026
- Updated
- Jul 9, 2026
- Reserved
- Feb 26, 2025
Description
[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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 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 | XEN |
Weaknesses
- CWE-276 Incorrect default permissions
Affected Products
| Product | Versions |
|---|---|
Windows PV driversXen |
|
References
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