Microsoft Windows Server 2008 vulnerabilities

CVE-2026-20940 High · 7.8 CWE-822 Jan 13, 2026

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-20936 Medium · 4.3 CWE-125 Jan 13, 2026

Windows NDIS Information Disclosure Vulnerability

Out-of-bounds read in Windows NDIS allows an authorized attacker to disclose information with a physical attack.

CVE-2026-20931 High · 8.0 CWE-73 Jan 13, 2026

Windows Telephony Service Elevation of Privilege Vulnerability

External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network.

CVE-2026-20929 High · 7.5 Public exploit CWE-284 Jan 13, 2026

Windows HTTP.sys Elevation of Privilege Vulnerability

Improper access control in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.

CVE-2026-20927 Medium · 5.3 CWE-362 Jan 13, 2026

Windows SMB Server Denial of Service Vulnerability

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

CVE-2026-20925 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-2026-20922 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-2026-20921 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-2026-20875 High · 7.5 CWE-476 Jan 13, 2026

Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability

Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.

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-2026-20849 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-2026-20847 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-2026-20821 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.