Microsoft Windows Server 2012 R2 vulnerabilities

CVE-2026-20872 Medium · 6.5 CWE-73 Jan 13, 2026

NTLM Hash Disclosure Spoofing Vulnerability

External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-20869 High · 7.0 CWE-362 Jan 13, 2026

Windows Local Session Manager (LSM) Elevation of Privilege Vulnerability

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

CVE-2026-20868 High · 8.8 CWE-122 Jan 13, 2026

Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

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-2026-20856 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-2026-20849 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-2026-20843 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-2026-20840 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-2026-20834 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-2026-20831 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.

CVE-2026-20828 Medium · 4.6 CWE-125 Jan 13, 2026

Windows rndismp6.sys Information Disclosure Vulnerability

Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical attack.

CVE-2026-20824 Medium · 5.5 CWE-693 Jan 13, 2026

Windows Remote Assistance Security Feature Bypass Vulnerability

Protection mechanism failure in Windows Remote Assistance allows an unauthorized attacker to bypass a security feature locally.

CVE-2026-20821 Medium · 6.2 CWE-200 Jan 13, 2026

Remote Procedure Call Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized attacker to disclose information locally.

CVE-2026-20820 High · 7.8 CWE-122 Jan 13, 2026

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-20816 High · 7.0 CWE-367 Jan 13, 2026

Windows Installer Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-20809 High · 7.8 CWE-122 Jan 13, 2026

Windows Kernel Memory Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.

CVE-2026-20805 Medium · 5.5 KEV High · 58 Public exploit CWE-200 Jan 13, 2026

Microsoft Windows Information Disclosure Vulnerability

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

CVE-2026-0386 High · 7.5 CWE-284 Jan 13, 2026

Windows Deployment Services Remote Code Execution Vulnerability

Improper access control in Windows Deployment Services allows an unauthorized attacker to execute code over an adjacent network.

CVE-2025-64678 High · 8.8 CWE-122 Dec 9, 2025

Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

CVE-2025-62571 High · 7.8 CWE-20 Dec 9, 2025

Windows Installer Elevation of Privilege Vulnerability

Improper input validation in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2025-62567 Medium · 5.3 CWE-191 Dec 9, 2025

Windows Hyper-V Denial of Service Vulnerability

Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.