Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-50354 [HIGH] CWE-416 CVE-2026-50354: Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2025-55680 [HIGH] CWE-367 CVE-2025-55680: Time-of-check time-of-use (toctou) race condition in Windows Cloud Files Mini Filter Driver allows a Time-of-check time-of-use (toctou) race condition in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2025-53717 [HIGH] CWE-807 CVE-2025-53717: Reliance on untrusted inputs in a security decision in Windows Virtualization-Based Security (VBS) E Reliance on untrusted inputs in a security decision in Windows Virtualization-Based Security (VBS) Enclave 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-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-2026-20869 [HIGH] CWE-362 CVE-2026-20869: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Local Session Manager (LSM) allows an authorized attacker to elevate privileges locally.

CVE-2026-21240 [HIGH] CWE-367 CVE-2026-21240: Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys 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-2026-50372 [HIGH] CWE-122 CVE-2026-50372: Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate priv Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate privileges locally.

CVE-2025-55687 [HIGH] CWE-362 CVE-2025-55687: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Resilient File System (ReFS) allows an unauthorized attacker to elevate privileges locally.

CVE-2026-26166 [HIGH] CWE-415 CVE-2026-26166: Double free in Windows Shell allows an authorized attacker to elevate privileges locally. Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

CVE-2026-27917 [HIGH] CWE-416 CVE-2026-27917: Use after free in Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) allows an authorized atta Use after free in Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) allows an authorized attacker to elevate privileges locally.

CVE-2025-59196 [HIGH] CWE-362 CVE-2025-59196: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SSDP Service allows an authorized attacker to elevate privileges locally.

CVE-2025-62469 [HIGH] CWE-362 CVE-2025-62469: Concurrent execution using shared resource with improper synchronization ('race condition') in Micro Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-45640 [HIGH] CWE-416 CVE-2026-45640: Use after free in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges Use after free in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-58619 [HIGH] CWE-416 CVE-2026-58619: Use after free in Windows Sensor Data Service allows an authorized attacker to elevate privileges lo Use after free in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.

CVE-2026-42825 [HIGH] CWE-416 CVE-2026-42825: Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges loca Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.

CVE-2026-21221 [HIGH] CWE-362 CVE-2026-21221: Concurrent execution using shared resource with improper synchronization ('race condition') in Capab 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-2026-48571 [HIGH] CWE-416 CVE-2026-48571: Use after free in Windows App Installer allows an authorized attacker to elevate privileges locally. Use after free in Windows App Installer allows an authorized attacker to elevate privileges locally.