Microsoft Windows 11 26h1 vulnerabilities

CVE-2026-27930 Medium · 5.5 CWE-125 Apr 14, 2026

Windows GDI Information Disclosure Vulnerability

Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.

CVE-2026-27929 High · 7.0 CWE-367 Apr 14, 2026

Windows LUA File Virtualization Filter Driver Elevation of Privilege Vulnerability

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

CVE-2026-27927 High · 7.0 CWE-362 Apr 14, 2026

Windows Projected File System Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Projected File System allows an authorized attacker to elevate privileges locally.

CVE-2026-27926 High · 7.0 CWE-362 Apr 14, 2026

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-27925 Medium · 6.5 CWE-416 Apr 14, 2026

Windows UPnP Device Host Information Disclosure Vulnerability

Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to disclose information over an adjacent network.

CVE-2026-27923 High · 7.8 CWE-416 Apr 14, 2026

Desktop Window Manager Elevation of Privilege Vulnerability

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

CVE-2026-27922 High · 7.0 CWE-416 Apr 14, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-27921 High · 7.0 CWE-362 Apr 14, 2026

Windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

CVE-2026-27920 High · 7.8 CWE-822 Apr 14, 2026

Windows UPnP Device Host Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

CVE-2026-27919 High · 7.8 CWE-822 Apr 14, 2026

Windows UPnP Device Host Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

CVE-2026-27918 High · 7.0 CWE-362 Apr 14, 2026

Windows Shell Elevation of Privilege Vulnerability

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

CVE-2026-27917 High · 7.0 CWE-416 Apr 14, 2026

Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) Elevation of Privilege Vulnerability

Use after free in Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-27916 High · 7.8 CWE-416 Apr 14, 2026

Windows UPnP Device Host Elevation of Privilege Vulnerability

Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

CVE-2026-27915 High · 7.8 CWE-416 Apr 14, 2026

Windows UPnP Device Host Elevation of Privilege Vulnerability

Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

CVE-2026-27914 High · 7.8 CWE-284 Apr 14, 2026

Microsoft Management Console Elevation of Privilege Vulnerability

Improper access control in Microsoft Management Console allows an authorized attacker to elevate privileges locally.

CVE-2026-27911 High · 7.8 CWE-362 Apr 14, 2026

Windows User Interface Core Elevation of Privilege Vulnerability

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

CVE-2026-27910 High · 7.8 CWE-280 Apr 14, 2026

Windows Installer Elevation of Privilege Vulnerability

Improper handling of insufficient permissions or privileges in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-27909 High · 7.8 CWE-416 Apr 14, 2026

Windows Search Service Elevation of Privilege Vulnerability

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

CVE-2026-27908 High · 7.0 CWE-416 Apr 14, 2026

Windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability

Use after free in Windows TDI Translation Driver (tdx.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-27907 High · 7.8 CWE-191 Apr 14, 2026

Windows Storage Spaces Controller Elevation of Privilege Vulnerability

Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

CVE-2026-27906 Medium · 4.4 CWE-20 Apr 14, 2026

Windows Hello Security Feature Bypass Vulnerability

Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

CVE-2026-26184 High · 7.8 CWE-126 Apr 14, 2026

Windows Projected File System Elevation of Privilege Vulnerability

Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privileges locally.

CVE-2026-26182 High · 7.0 CWE-416 Apr 14, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-26181 High · 7.8 CWE-362 Apr 14, 2026

Microsoft Brokering File System Elevation of Privilege Vulnerability

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-26180 High · 7.8 CWE-122 Apr 14, 2026

Windows Kernel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.