CVE-2025-27464

CriticalCVSS 9.4/10Last modified Sep 29, 2026

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

Metrics

CVSS 4.0 9.4/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-276

Affected software

No affected versions have been published.

Timeline

Published: Jul 9, 2026
Last modified: Sep 29, 2026
NVD status: Deferred

Related CVEs from 2025

CVE-2025-274654.3Certain instructions need intercepting and emulating by Xen. In some cases Xen emulates the instruction by replaying it, using an executabl CVE-2025-274669.8[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] There are CVE-2025-274677.8Use after free in Windows Digital Media allows an authorized attacker to elevate privileges locally.CVE-2025-274687.0Improper privilege management in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.CVE-2025-274697.5Uncontrolled resource consumption in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service ov CVE-2025-27479.8An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server component password hand CVE-2025-274707.5Uncontrolled resource consumption in Windows Standards-Based Storage Management Service allows an unauthorized attacker to deny service over CVE-2025-274715.9Sensitive data storage in improperly locked memory in Microsoft Streaming Service allows an unauthorized attacker to deny service over a net CVE-2025-274725.4Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security feature over a network.CVE-2025-274737.5Uncontrolled resource consumption in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.CVE-2025-274746.5Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information ov CVE-2025-274757.0Sensitive data storage in improperly locked memory in Windows Update Stack allows an authorized attacker to elevate privileges locally.