Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-69945 [HIGH] CWE-862 CVE-2026-69945: Missing authorization in Windows AppX Deployment Extensions allows an authorized attacker to elevate Missing authorization in Windows AppX Deployment Extensions allows an authorized attacker to elevate privileges locally.

CVE-2026-21231 [HIGH] CWE-362 CVE-2026-21231: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-33835 [HIGH] CWE-416 CVE-2026-33835: Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate pr Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2024-30089 [HIGH] CWE-416 CVE-2024-30089: Microsoft Streaming Service Elevation of Privilege Vulnerability Microsoft Streaming Service Elevation of Privilege Vulnerability

CVE-2024-30020 [HIGH] CWE-122 CVE-2024-30020: Windows Cryptographic Services Remote Code Execution Vulnerability Windows Cryptographic Services Remote Code Execution Vulnerability

CVE-2024-49126 [HIGH] CWE-416 CVE-2024-49126: Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability

CVE-2026-42905 [HIGH] CWE-416 CVE-2026-42905: Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges local Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2025-27487 [HIGH] CWE-122 CVE-2025-27487: Heap-based buffer overflow in Remote Desktop Client allows an authorized attacker to execute code ov Heap-based buffer overflow in Remote Desktop Client allows an authorized attacker to execute code over a network.

CVE-2026-56189 [HIGH] CWE-122 CVE-2026-56189: Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.

CVE-2024-49123 [HIGH] CWE-591 CVE-2024-49123: Windows Remote Desktop Services Remote Code Execution Vulnerability Windows Remote Desktop Services Remote Code Execution Vulnerability

CVE-2024-49132 [HIGH] CWE-416 CVE-2024-49132: Windows Remote Desktop Services Remote Code Execution Vulnerability Windows Remote Desktop Services Remote Code Execution Vulnerability

CVE-2023-23416 [HIGH] CWE-20 CVE-2023-23416: Windows Cryptographic Services Remote Code Execution Vulnerability Windows Cryptographic Services Remote Code Execution Vulnerability

CVE-2023-36400 [HIGH] CWE-122 CVE-2023-36400: Windows HMAC Key Derivation Elevation of Privilege Vulnerability Windows HMAC Key Derivation Elevation of Privilege Vulnerability

CVE-2025-62458 [HIGH] CWE-122 CVE-2025-62458: Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privile Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

CVE-2026-26128 [HIGH] CWE-287 CVE-2026-26128: Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges lo Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.

CVE-2023-36903 [CRITICAL] CWE-59 CVE-2023-36903: Windows System Assessment Tool Elevation of Privilege Vulnerability Windows System Assessment Tool Elevation of Privilege Vulnerability

CVE-2026-20864 [HIGH] CWE-122 CVE-2026-20864: Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attac Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.

CVE-2025-48814 [HIGH] CWE-306 CVE-2025-48814: Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an u Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-21239 [HIGH] CWE-122 CVE-2026-21239: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-69918 [HIGH] CWE-122 CVE-2026-69918: Heap-based buffer overflow in Windows Core Messaging allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows Core Messaging allows an authorized attacker to elevate privileges locally.