Microsoft Windows 10 21H2 vulnerabilities

CVE-2025-50167 [HIGH] CWE-362 CVE-2025-50167: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2025-53721 [HIGH] CWE-416 CVE-2025-53721: 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-2025-60717 [HIGH] CWE-416 CVE-2025-60717: Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privil Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

CVE-2025-59515 [HIGH] CWE-416 CVE-2025-59515: Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privil Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

CVE-2025-59202 [HIGH] CWE-416 CVE-2025-59202: Use after free in Windows Remote Desktop Services allows an authorized attacker to elevate privilege Use after free in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.

CVE-2026-83908 [HIGH] CWE-763 CVE-2026-83908: Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate priv Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-20831 [HIGH] CWE-367 CVE-2026-20831: Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock a 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-2025-55223 [HIGH] CWE-362 CVE-2025-55223: Concurrent execution using shared resource with improper synchronization ('race condition') in Graph Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.

CVE-2025-54114 [HIGH] CWE-362 CVE-2025-54114: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.

CVE-2025-29960 [MEDIUM] CWE-125 CVE-2025-29960: Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attack Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

CVE-2025-29959 [MEDIUM] CWE-908 CVE-2025-29959: Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthor Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

CVE-2026-88076 [HIGH] CWE-476 CVE-2026-88076: Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges lo Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-96209 [HIGH] CWE-125 CVE-2026-96209: Out-of-bounds read in Windows Network File System allows an authorized attacker to elevate privilege Out-of-bounds read in Windows Network File System allows an authorized attacker to elevate privileges locally.

CVE-2025-53135 [HIGH] CWE-362 CVE-2025-53135: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DirectX allows an authorized attacker to elevate privileges locally.

CVE-2026-70212 [HIGH] CWE-923 CVE-2026-70212: Improper restriction of communication channel to intended endpoints in Windows Security Center allow Improper restriction of communication channel to intended endpoints in Windows Security Center allows an authorized attacker to elevate privileges locally.

CVE-2026-72947 [HIGH] CWE-191 CVE-2026-72947: Integer underflow (wrap or wraparound) in Windows File History Service allows an authorized attacker Integer underflow (wrap or wraparound) in Windows File History Service allows an authorized attacker to elevate privileges locally.

CVE-2025-55328 [HIGH] CWE-362 CVE-2025-55328: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2026-69600 [HIGH] CWE-416 CVE-2026-69600: Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privil Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-69578 [HIGH] CWE-122 CVE-2026-69578: Numeric truncation error in Windows Kernel allows an authorized attacker to elevate privileges local Numeric truncation error in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-69630 [HIGH] CWE-125 CVE-2026-69630: Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally. Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.