Microsoft Windows Server 2022 23h2 vulnerabilities

CVE-2026-20932 Medium · 5.5 CWE-200 Jan 13, 2026

Windows File Explorer Information Disclosure Vulnerability

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

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-2026-20926 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-2026-20925 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-2026-20924 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-2026-20923 High · 7.8 CWE-416 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-2026-20922 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-2026-20920 High · 7.8 CWE-416 Jan 13, 2026

Win32k Elevation of Privilege Vulnerability

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

CVE-2026-20919 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-2026-20918 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-2026-20877 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-2026-20876 Medium · 6.7 CWE-122 Jan 13, 2026

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

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-2026-20874 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-2026-20873 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-2026-20872 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-2026-20871 High · 7.8 CWE-416 Jan 13, 2026

Desktop Window Manager Elevation of Privilege Vulnerability

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

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-2026-20867 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-2026-20866 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-2026-20865 High · 7.8 CWE-416 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.