Microsoft Windows 10 21H2 vulnerabilities

CVE-2025-48805 [HIGH] CWE-122 CVE-2025-48805: Heap-based buffer overflow in Microsoft MPEG-2 Video Extension allows an authorized attacker to exec Heap-based buffer overflow in Microsoft MPEG-2 Video Extension allows an authorized attacker to execute code locally.

CVE-2025-48806 [HIGH] CWE-416 CVE-2025-48806: Use after free in Microsoft MPEG-2 Video Extension allows an authorized attacker to execute code loc Use after free in Microsoft MPEG-2 Video Extension allows an authorized attacker to execute code locally.

CVE-2026-50377 [HIGH] CWE-125 CVE-2026-50377: 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-2026-20923 [HIGH] CWE-416 CVE-2026-20923: 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-2026-25176 [HIGH] CWE-284 CVE-2026-25176: Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attack Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-88072 [HIGH] CWE-59 CVE-2026-88072: Improper access control in Windows Host Guardian Service allows an authorized attacker to elevate pr Improper access control in Windows Host Guardian Service allows an authorized attacker to elevate privileges locally.

CVE-2025-26687 [HIGH] CWE-416 CVE-2025-26687: Use after free in Windows Win32K - GRFX allows an unauthorized attacker to elevate privileges over a Use after free in Windows Win32K - GRFX allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-20865 [HIGH] CWE-416 CVE-2026-20865: 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-2026-83637 [HIGH] CWE-125 CVE-2026-83637: Out-of-bounds read in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privilege Out-of-bounds read in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVE-2026-83508 [HIGH] CWE-125 CVE-2026-83508: 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-2026-70064 [HIGH] CWE-191 CVE-2026-70064: Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate privileges locally.

CVE-2026-83567 [HIGH] CWE-125 CVE-2026-83567: 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-2026-70113 [HIGH] CWE-190 CVE-2026-70113: Integer overflow or wraparound in Windows Client for NFS allows an authorized attacker to elevate pr Integer overflow or wraparound in Windows Client for NFS allows an authorized attacker to elevate privileges locally.

CVE-2026-69953 [HIGH] CWE-126 CVE-2026-69953: Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges local Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.

CVE-2026-69959 [HIGH] CWE-125 CVE-2026-69959: Out-of-bounds read in Windows Overlay Filter allows an authorized attacker to execute code locally. Out-of-bounds read in Windows Overlay Filter allows an authorized attacker to execute code locally.

CVE-2026-70008 [HIGH] CWE-190 CVE-2026-70008: Integer overflow or wraparound in Windows IP Over USB Service allows an authorized attacker to eleva Integer overflow or wraparound in Windows IP Over USB Service allows an authorized attacker to elevate privileges locally.

CVE-2026-69950 [HIGH] CWE-126 CVE-2026-69950: Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges local Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.

CVE-2026-58613 [HIGH] CWE-416 CVE-2026-58613: 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-2026-88191 [HIGH] CWE-59 CVE-2026-88191: Improper link resolution before file access ('link following') in Microsoft Windows Search Component Improper link resolution before file access ('link following') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-69612 [HIGH] CWE-36 CVE-2026-69612: Absolute path traversal in Windows Error Reporting allows an authorized attacker to elevate privileg Absolute path traversal in Windows Error Reporting allows an authorized attacker to elevate privileges locally.