Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-83574 [HIGH] CWE-416 CVE-2026-83574: 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-2026-20831 [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-2026-70156 [HIGH] CWE-416 CVE-2026-70156: 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-2026-20869 [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-2025-55678 [HIGH] CWE-416 CVE-2025-55678: Use after free in Windows DirectX allows an authorized attacker to elevate privileges locally. Use after free in Windows DirectX allows an authorized attacker to elevate privileges locally.

CVE-2026-83676 [HIGH] CWE-122 CVE-2026-83676: Integer underflow (wrap or wraparound) in Windows Installer allows an authorized attacker to elevate Integer underflow (wrap or wraparound) in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-83689 [HIGH] CWE-416 CVE-2026-83689: Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locall Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-85355 [HIGH] CWE-829 CVE-2026-85355: Inclusion of functionality from untrusted control sphere in Windows Common Log File System Driver al Inclusion of functionality from untrusted control sphere in Windows Common Log File System Driver 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-2026-70086 [HIGH] CWE-416 CVE-2026-70086: 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-2026-70150 [HIGH] CWE-416 CVE-2026-70150: 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-2026-70136 [HIGH] CWE-416 CVE-2026-70136: 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-2026-88079 [HIGH] CWE-476 CVE-2026-88079: Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate pri Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

CVE-2026-97812 [HIGH] CWE-415 CVE-2026-97812: Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileg Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.

CVE-2026-70115 [HIGH] CWE-416 CVE-2026-70115: 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-2026-95943 [HIGH] CWE-415 CVE-2026-95943: Double free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate Double free in Connected Devices Platform Service (Cdpsvc) 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-2026-72952 [HIGH] CWE-125 CVE-2026-72952: Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally. Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally.

CVE-2026-69401 [HIGH] CWE-416 CVE-2026-69401: Use after free in Audio Video Control Transport Protocol allows an authorized attacker to elevate pr Use after free in Audio Video Control Transport Protocol allows an authorized attacker to elevate privileges locally.

CVE-2026-69838 [HIGH] CWE-416 CVE-2026-69838: Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileg Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.