Microsoft Windows Server 2022 23h2 vulnerabilities

CVE-2026-20864 High · 7.8 CWE-122 Jan 13, 2026

Windows Connected Devices Platform Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.

CVE-2026-20863 High · 7.0 CWE-415 Jan 13, 2026

Win32k Elevation of Privilege Vulnerability

Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

CVE-2026-20862 Medium · 5.5 CWE-200 Jan 13, 2026

Windows Management Services Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Management Services allows an authorized attacker to disclose information locally.

CVE-2026-20861 High · 7.8 CWE-362 Jan 13, 2026

Windows Management Services Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.

CVE-2026-20860 High · 7.8 CWE-843 Jan 13, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-20858 High · 7.8 CWE-362 Jan 13, 2026

Windows Management Services Elevation of Privilege Vulnerability

Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.

CVE-2026-20857 High · 7.8 CWE-822 Jan 13, 2026

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-20856 High · 8.1 CWE-20 Jan 13, 2026

Windows Server Update Service (WSUS) Remote Code Execution Vulnerability

Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

CVE-2026-20852 High · 7.7 CWE-266 Jan 13, 2026

Windows Hello Tampering Vulnerability

Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.

CVE-2026-20849 High · 7.5 CWE-807 Jan 13, 2026

Windows Kerberos Elevation of Privilege Vulnerability

Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

CVE-2026-20848 High · 7.5 CWE-362 Jan 13, 2026

Windows SMB Server Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

CVE-2026-20847 Medium · 6.5 CWE-200 Jan 13, 2026

Microsoft Windows File Explorer Spoofing Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network.

CVE-2026-20844 High · 7.4 CWE-362 Jan 13, 2026

Windows Clipboard Server Elevation of Privilege Vulnerability

Use after free in Windows Clipboard Server allows an unauthorized attacker to elevate privileges locally.

CVE-2026-20843 High · 7.8 CWE-284 Jan 13, 2026

Windows Routing and Remote Access Service (RRAS) Elevation of Privilege Vulnerability

Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

CVE-2026-20842 High · 7.0 CWE-416 Jan 13, 2026

Microsoft DWM Core Library Elevation of Privilege Vulnerability

Use after free in Windows DWM allows an authorized attacker to elevate privileges locally.

CVE-2026-20840 High · 7.8 CWE-122 Jan 13, 2026

Windows NTFS Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

CVE-2026-20839 Medium · 5.5 CWE-284 Jan 13, 2026

Windows Client-Side Caching (CSC) Service Information Disclosure Vulnerability

Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose information locally.

CVE-2026-20838 Medium · 5.5 CWE-209 Jan 13, 2026

Windows Kernel Information Disclosure Vulnerability

Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.

CVE-2026-20837 High · 7.8 CWE-122 Jan 13, 2026

Windows Media Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.

CVE-2026-20836 High · 7.0 CWE-362 Jan 13, 2026

DirectX Graphics Kernel Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-20835 Medium · 5.5 CWE-125 Jan 13, 2026

Capability Access Management Service (camsvc) Information Disclosure Vulnerability

Out-of-bounds read in Capability Access Management Service (camsvc) allows an authorized attacker to disclose information locally.

CVE-2026-20834 Medium · 4.6 CWE-36 Jan 13, 2026

Windows Spoofing Vulnerability

Absolute path traversal in Windows Shell allows an unauthorized attacker to perform spoofing with a physical attack.

CVE-2026-20833 Medium · 5.5 CWE-327 Jan 13, 2026

Windows Kerberos Information Disclosure Vulnerability

Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally.

CVE-2026-20832 High · 7.8 CWE-415 Jan 13, 2026

Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability

CVE-2026-20831 High · 7.0 CWE-367 Jan 13, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.