CVE-2025-27464— WinPVDrivers: Excessive permissions on user-exposed devices
Possible ATT&CK Techniques 3AI
T1548 · Abuse Elevation Control Mechanism T1055 · Process Injection T1068 · Exploitation for Privilege EscalationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Xen | Windows PV drivers | all | affected |
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I. Basic Information for CVE-2025-27464
Vulnerability Information
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Vulnerability Title
WinPVDrivers: Excessive permissions on user-exposed devices
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Xen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是Xen开源的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen存在安全漏洞，该漏洞源于通过WinPVDrivers绕过限制，可能导致权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Xen | Windows PV drivers | all | - |
II. Public POCs for CVE-2025-27464
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-27464 (1)
Same Patch Batch · Xen · 2026-07-09 · 11 CVEs total
| CVE-2026-42486 | Multiple RBAC issues in XAPI | |
| CVE-2026-23562 | Multiple RBAC issues in XAPI | |
| CVE-2026-23560 | Multiple RBAC issues in XAPI | |
| CVE-2026-23561 | Multiple RBAC issues in XAPI | |
| CVE-2026-23559 | Multiple RBAC issues in XAPI | |
| CVE-2026-23556 | oxenstored keeps quota related use counts across domain destruction | |
| CVE-2025-58146 | XAPI UTF-8 string handling | |
| CVE-2025-58151 | varstored: TOCTOU issues with mapped guest memory | |
| CVE-2025-27462 | WinPVDrivers: Excessive permissions on user-exposed devices | |
| CVE-2025-27463 | WinPVDrivers: Excessive permissions on user-exposed devices |
IV. Related Vulnerabilities
Same weakness: CWE-276
- CVE-2026-16247
Insecure permission overwrite due to execution of LogPathCon - CVE-2026-16246
Insecure permission assignment due to execution of LogPathCo - CVE-2024-58356
SurrealDB before 2.1.4 Permission Bypass via DEFINE TABLE OV - CVE-2023-54366
SurrealDB before 1.0.1 Insecure Default Table Permissions - CVE-2026-61828
nixos/mysql : `services.mysql` is configured with insecure a
V. Comments for CVE-2025-27464
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