Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-50399 [HIGH] CWE-125 CVE-2026-50399: Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally. Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-56182 [HIGH] CWE-122 CVE-2026-56182: Integer overflow or wraparound in Windows NTFS allows an authorized attacker to elevate privileges l Integer overflow or wraparound in Windows NTFS allows an authorized attacker to elevate privileges locally.

CVE-2026-42982 [HIGH] CWE-1288 CVE-2026-42982: Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized a Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

CVE-2026-49176 [HIGH] CWE-59 CVE-2026-49176: Improper privilege management in Windows WalletService allows an authorized attacker to elevate priv Improper privilege management in Windows WalletService allows an authorized attacker to elevate privileges locally.

CVE-2026-100217 [HIGH] CWE-862 CVE-2026-100217: 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-2026-83791 [HIGH] CWE-283 CVE-2026-83791: Improper authorization in Windows Virtual Input allows an authorized attacker to elevate privileges Improper authorization in Windows Virtual Input allows an authorized attacker to elevate privileges locally.

CVE-2026-83792 [HIGH] CWE-863 CVE-2026-83792: Incorrect authorization in Windows Device Install Service allows an authorized attacker to elevate p Incorrect authorization in Windows Device Install Service allows an authorized attacker to elevate privileges locally.

CVE-2026-88070 [HIGH] CWE-125 CVE-2026-88070: Out-of-bounds read in Windows BitLocker allows an authorized attacker to elevate privileges locally. Out-of-bounds read in Windows BitLocker allows an authorized attacker to elevate privileges locally.

CVE-2026-32077 [HIGH] CWE-822 CVE-2026-32077: 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-2026-85356 [HIGH] CWE-125 CVE-2026-85356: Out-of-bounds read in Windows Volume Manager Extension Driver allows an authorized attacker to eleva Out-of-bounds read in Windows Volume Manager Extension Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-45656 [HIGH] CWE-693 CVE-2026-45656: Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feat Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally.

CVE-2025-49732 [HIGH] CWE-122 CVE-2025-49732: Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

CVE-2026-96918 [HIGH] CWE-863 CVE-2026-96918: Improper access control in Windows NTFS allows an authorized attacker to elevate privileges locally. Improper access control in Windows NTFS allows an authorized attacker to elevate privileges locally.

CVE-2026-85807 [HIGH] CWE-190 CVE-2026-85807: Integer overflow or wraparound in Windows USB Video Driver allows an authorized attacker to elevate Integer overflow or wraparound in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-85377 [HIGH] CWE-843 CVE-2026-85377: Access of resource using incompatible type ('type confusion') in Windows CD-ROM Driver allows an aut Access of resource using incompatible type ('type confusion') in Windows CD-ROM Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-96928 [HIGH] CWE-125 CVE-2026-96928: Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally. Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.

CVE-2026-33828 [HIGH] CWE-501 CVE-2026-33828: Trust boundary violation in Windows Attestation allows an authorized attacker to elevate privileges Trust boundary violation in Windows Attestation allows an authorized attacker to elevate privileges locally.

CVE-2026-33098 [HIGH] CWE-416 CVE-2026-33098: Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elev Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-96915 [HIGH] CWE-190 CVE-2026-96915: Integer overflow or wraparound in Windows Kernel-Mode Drivers allows an authorized attacker to eleva Integer overflow or wraparound in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVE-2026-20877 [HIGH] CWE-362 CVE-2026-20877: 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.