Vulnerabilidades do Microsoft Windows Server 2025 (Server Core installation)

CVE-2026-20876 Média · 6.7 CWE-122 13/01/2026

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 Alta · 7.5 CWE-476 13/01/2026

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 Alta · 7.8 CWE-362 13/01/2026

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 Alta · 7.8 CWE-362 13/01/2026

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 Média · 6.5 CWE-73 13/01/2026

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 Alta · 7.8 CWE-416 13/01/2026

Desktop Window Manager Elevation of Privilege Vulnerability

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

CVE-2026-20870 Alta · 7.8 CWE-416 13/01/2026

Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability

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

CVE-2026-20869 Alta · 7.0 CWE-362 13/01/2026

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 Alta · 8.8 CWE-122 13/01/2026

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 Alta · 7.8 CWE-362 13/01/2026

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 Alta · 7.8 CWE-362 13/01/2026

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 Alta · 7.8 CWE-416 13/01/2026

Windows Management Services Elevation of Privilege Vulnerability

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

CVE-2026-20864 Alta · 7.8 CWE-122 13/01/2026

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 Alta · 7.0 CWE-415 13/01/2026

Win32k Elevation of Privilege Vulnerability

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

CVE-2026-20862 Média · 5.5 CWE-200 13/01/2026

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 Alta · 7.8 CWE-362 13/01/2026

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 Alta · 7.8 CWE-843 13/01/2026

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-2026-20859 Alta · 7.8 CWE-416 13/01/2026

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVE-2026-20858 Alta · 7.8 CWE-362 13/01/2026

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 Alta · 7.8 CWE-822 13/01/2026

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 Alta · 8.1 CWE-20 13/01/2026

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-2026-20854 Alta · 7.5 CWE-416 13/01/2026

Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability

Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to execute code over a network.

CVE-2026-20852 Alta · 7.7 CWE-266 13/01/2026

Windows Hello Tampering Vulnerability

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

CVE-2026-20851 Média · 6.2 CWE-125 13/01/2026

Capability Access Management Service (camsvc) Information Disclosure Vulnerability

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

CVE-2026-20849 Alta · 7.5 CWE-807 13/01/2026

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.