Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-20924 [HIGH] CWE-362 CVE-2026-20924: Use after free in Windows Management Services allows an authorized attacker to elevate privileges lo Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.

CVE-2026-20918 [HIGH] CWE-362 CVE-2026-20918: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.

CVE-2026-69907 [HIGH] CWE-280 CVE-2026-69907: Improper handling of insufficient permissions or privileges in Windows Enterprise App Management all Improper handling of insufficient permissions or privileges in Windows Enterprise App Management allows an authorized attacker to elevate privileges locally.

CVE-2026-69377 [HIGH] CWE-862 CVE-2026-69377: Missing authorization in Windows Modern Device Management (MDM) allows an authorized attacker to ele Missing authorization in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

CVE-2026-50391 [HIGH] CWE-269 CVE-2026-50391: Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privi Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally.

CVE-2026-50335 [HIGH] CWE-284 CVE-2026-50335: Improper access control in Windows Operating Systems allows an authorized attacker to elevate privil Improper access control in Windows Operating Systems allows an authorized attacker to elevate privileges locally.

CVE-2026-50373 [HIGH] CWE-284 CVE-2026-50373: Improper access control in Microsoft Windows Search Component allows an authorized attacker to eleva Improper access control in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-50351 [HIGH] CWE-284 CVE-2026-50351: Improper access control in Windows Audio Compression Manager (ACM) allows an authorized attacker to Improper access control in Windows Audio Compression Manager (ACM) allows an authorized attacker to elevate privileges locally.

CVE-2026-50346 [HIGH] CWE-285 CVE-2026-50346: Improper authorization in RPC Runtime allows an authorized attacker to elevate privileges locally. Improper authorization in RPC Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-27919 [HIGH] CWE-822 CVE-2026-27919: Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an author Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

CVE-2026-20858 [HIGH] CWE-362 CVE-2026-20858: Use after free in Windows Management Services allows an authorized attacker to elevate privileges lo Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.

CVE-2026-97811 [HIGH] CWE-400 CVE-2026-97811: Double free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally. Double free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.

CVE-2026-45637 [HIGH] CWE-416 CVE-2026-45637: Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges local Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-45605 [HIGH] CWE-416 CVE-2026-45605: Use after free in Windows Bluetooth Service allows an authorized attacker to elevate privileges loca Use after free in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.

CVE-2026-45593 [HIGH] CWE-190 CVE-2026-45593: Use after free in Windows SDK allows an authorized attacker to elevate privileges locally. Use after free in Windows SDK allows an authorized attacker to elevate privileges locally.

CVE-2026-42983 [HIGH] CWE-416 CVE-2026-42983: Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges local Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-50406 [HIGH] CWE-416 CVE-2026-50406: Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally. Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

CVE-2026-54989 [HIGH] CWE-416 CVE-2026-54989: Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attack Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.

CVE-2026-50359 [HIGH] CWE-416 CVE-2026-50359: Use after free in Microsoft XML Core Services allows an authorized attacker to elevate privileges lo Use after free in Microsoft XML Core Services allows an authorized attacker to elevate privileges locally.

CVE-2026-50390 [HIGH] CWE-843 CVE-2026-50390: Access of resource using incompatible type ('type confusion') in Windows Kernel allows an authorized Access of resource using incompatible type ('type confusion') in Windows Kernel allows an authorized attacker to elevate privileges locally.