Vulnerabilidades do Microsoft Windows Server 2025 (Server Core installation)

CVE-2026-20848 Alta · 7.5 CWE-362 13/01/2026

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 Média · 6.5 CWE-200 13/01/2026

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 Alta · 7.4 CWE-362 13/01/2026

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 Alta · 7.8 CWE-284 13/01/2026

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 Alta · 7.0 CWE-416 13/01/2026

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 Alta · 7.8 CWE-122 13/01/2026

Windows NTFS Remote Code Execution Vulnerability

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

CVE-2026-20839 Média · 5.5 CWE-284 13/01/2026

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 Média · 5.5 CWE-209 13/01/2026

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 Alta · 7.8 CWE-122 13/01/2026

Windows Media Remote Code Execution Vulnerability

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

CVE-2026-20836 Alta · 7.0 CWE-362 13/01/2026

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 Média · 5.5 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 authorized attacker to disclose information locally.

CVE-2026-20834 Média · 4.6 CWE-36 13/01/2026

Windows Spoofing Vulnerability

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

CVE-2026-20833 Média · 5.5 CWE-327 13/01/2026

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 Alta · 7.8 CWE-415 13/01/2026

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

CVE-2026-20831 Alta · 7.0 CWE-367 13/01/2026

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-2026-20830 Alta · 7.0 CWE-362 13/01/2026

Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

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

CVE-2026-20829 Média · 5.5 CWE-125 13/01/2026

TPM Trustlet Information Disclosure Vulnerability

Out-of-bounds read in Windows TPM allows an authorized attacker to disclose information locally.

CVE-2026-20828 Média · 4.6 CWE-125 13/01/2026

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-2026-20827 Média · 5.5 CWE-200 13/01/2026

Tablet Windows User Interface (TWINUI) Subsystem Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attacker to disclose information locally.

CVE-2026-20826 Alta · 7.0 CWE-362 13/01/2026

Tablet Windows User Interface (TWINUI) Subsystem Information Disclosure Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attacker to elevate privileges locally.

CVE-2026-20825 Média · 4.4 CWE-284 13/01/2026

Windows Hyper-V Information Disclosure Vulnerability

Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.

CVE-2026-20824 Média · 5.5 CWE-693 13/01/2026

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-2026-20823 Média · 5.5 CWE-200 13/01/2026

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-2026-20822 Alta · 7.8 CWE-416 13/01/2026

Windows Graphics Component Elevation of Privilege Vulnerability

Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

CVE-2026-20821 Média · 6.2 CWE-200 13/01/2026

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.