Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-69501 [HIGH] CWE-822 CVE-2026-69501: Untrusted pointer dereference in Windows Secure Kernel Mode allows an authorized attacker to elevate Untrusted pointer dereference in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

CVE-2026-69911 [HIGH] CWE-416 CVE-2026-69911: 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-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-2025-55335 [HIGH] CWE-362 CVE-2025-55335: Use after free in Windows NTFS allows an unauthorized attacker to elevate privileges locally. Use after free in Windows NTFS 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-2026-96937 [HIGH] CWE-416 CVE-2026-96937: 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-2026-85354 [HIGH] CWE-416 CVE-2026-85354: 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-2026-50297 [HIGH] CWE-284 CVE-2026-50297: Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locall Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVE-2026-50325 [HIGH] CWE-284 CVE-2026-50325: Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locall Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVE-2026-49805 [HIGH] CWE-284 CVE-2026-49805: Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locall Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVE-2026-83510 [HIGH] CWE-367 CVE-2026-83510: Time-of-check time-of-use (toctou) race condition in Windows Setup Files Cleanup allows an authorize Time-of-check time-of-use (toctou) race condition in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.

CVE-2026-71347 [HIGH] CWE-362 CVE-2026-71347: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Security Center allows an authorized attacker to elevate privileges locally.

CVE-2026-85943 [HIGH] CWE-122 CVE-2026-85943: Time-of-check time-of-use (toctou) race condition in Reliable Multicast Transport Driver (RMCAST) al Time-of-check time-of-use (toctou) race condition in Reliable Multicast Transport Driver (RMCAST) allows an authorized attacker to elevate privileges locally.

CVE-2026-83839 [HIGH] CWE-367 CVE-2026-83839: Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker t Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2026-69779 [HIGH] CWE-367 CVE-2026-69779: Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attacker to Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVE-2026-62728 [HIGH] CWE-125 CVE-2026-62728: Time-of-check time-of-use (toctou) race condition in Windows Common Log File System Driver allows an Time-of-check time-of-use (toctou) race condition in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-50356 [HIGH] CWE-362 CVE-2026-50356: Concurrent execution using shared resource with improper synchronization ('race condition') in Micro Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store allows an authorized attacker to elevate privileges locally.

CVE-2026-49784 [HIGH] CWE-362 CVE-2026-49784: Concurrent execution using shared resource with improper synchronization ('race condition') in Micro Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store allows an authorized attacker to elevate privileges locally.

CVE-2026-83868 [HIGH] CWE-362 CVE-2026-83868: Concurrent execution using shared resource with improper synchronization ('race condition') in Micro Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth Driver allows an authorized attacker to elevate privileges locally.