Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-70177 [HIGH] CWE-20 CVE-2026-70177: Numeric truncation error in Microsoft Windows Search Component allows an authorized attacker to elev Numeric truncation error in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-40404 [HIGH] CWE-122 CVE-2026-40404: Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability

CVE-2026-50441 [HIGH] CWE-822 CVE-2026-50441: Untrusted pointer dereference in Windows Resilient File System (ReFS) allows an authorized attacker Untrusted pointer dereference in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-50479 [HIGH] CWE-822 CVE-2026-50479: Untrusted pointer dereference in Windows USB Hub Driver allows an authorized attacker to elevate pri Untrusted pointer dereference in Windows USB Hub Driver allows an authorized attacker to elevate privileges locally.

CVE-2025-48000 [HIGH] CWE-362 CVE-2025-48000: Use after free in Windows Connected Devices Platform Service allows an authorized attacker to elevat Use after free in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.

CVE-2025-55228 [HIGH] CWE-362 CVE-2025-55228: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to execute code locally.

CVE-2026-96953 [HIGH] CWE-476 CVE-2026-96953: Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an author Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to execute code locally.

CVE-2025-54913 [HIGH] CWE-362 CVE-2025-54913: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows UI XAML Maps MapControlSettings allows an authorized attacker to elevate privileges locally.

CVE-2025-58714 [HIGH] CWE-284 CVE-2025-58714: Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attack Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-34336 [HIGH] CWE-122 CVE-2026-34336: Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-88189 [HIGH] CWE-125 CVE-2026-88189: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-88180 [HIGH] CWE-125 CVE-2026-88180: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-96306 [HIGH] CWE-125 CVE-2026-96306: Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges lo Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges locally.

CVE-2026-88177 [HIGH] CWE-125 CVE-2026-88177: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-26184 [HIGH] CWE-126 CVE-2026-26184: Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privilege Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privileges locally.

CVE-2026-50673 [HIGH] CWE-367 CVE-2026-50673: Null pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges local Null pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-21247 [HIGH] CWE-20 CVE-2026-21247: Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally. Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.

CVE-2026-68846 [HIGH] CWE-416 CVE-2026-68846: Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network. Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.

CVE-2026-69336 [HIGH] CWE-122 CVE-2026-69336: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVE-2026-68889 [HIGH] CWE-122 CVE-2026-68889: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.