Microsoft Windows 10 21H2 vulnerabilities

CVE-2025-58730 [HIGH] CWE-416 CVE-2025-58730: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

CVE-2025-58738 [HIGH] CWE-416 CVE-2025-58738: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

CVE-2025-58736 [HIGH] CWE-416 CVE-2025-58736: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

CVE-2025-58734 [HIGH] CWE-416 CVE-2025-58734: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

CVE-2025-58733 [HIGH] CWE-416 CVE-2025-58733: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code 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-2025-49734 [HIGH] CWE-923 CVE-2025-49734: Improper restriction of communication channel to intended endpoints in Windows PowerShell allows an Improper restriction of communication channel to intended endpoints in Windows PowerShell 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-2025-53135 [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-2026-27917 [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-2025-55687 [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-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-2025-59220 [HIGH] CWE-362 CVE-2025-59220: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bluetooth 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-2025-26672 [MEDIUM] CWE-126 CVE-2025-26672: Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

CVE-2026-35418 [HIGH] CWE-367 CVE-2026-35418: 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-2026-32083 [HIGH] CWE-362 CVE-2026-32083: 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.