Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-77500 [HIGH] CWE-763 CVE-2026-77500: Release of invalid pointer or reference in Windows Device Association Service allows an authorized a Release of invalid pointer or reference in Windows Device Association Service allows an authorized attacker to elevate privileges locally.

CVE-2026-68875 [HIGH] CWE-126 CVE-2026-68875: Buffer over-read in Windows NTFS allows an authorized attacker to execute code locally. Buffer over-read in Windows NTFS allows an authorized attacker to execute code locally.

CVE-2026-69421 [HIGH] CWE-122 CVE-2026-69421: Integer underflow (wrap or wraparound) in Windows Kernel Mode Driver allows an authorized attacker t Integer underflow (wrap or wraparound) in Windows Kernel Mode Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-69538 [HIGH] CWE-125 CVE-2026-69538: Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally. Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally.

CVE-2026-69582 [HIGH] CWE-126 CVE-2026-69582: Buffer over-read in Windows Volume Manager Extension Driver allows an authorized attacker to elevate Buffer over-read in Windows Volume Manager Extension Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-61937 [HIGH] CWE-122 CVE-2026-61937: Integer overflow or wraparound in Windows HTTP.sys allows an authorized attacker to elevate privileg Integer overflow or wraparound in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

CVE-2026-59127 [HIGH] CWE-190 CVE-2026-59127: Integer overflow or wraparound in Windows Installer allows an authorized attacker to elevate privile Integer overflow or wraparound in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-62888 [HIGH] CWE-416 CVE-2026-62888: 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-2026-61932 [HIGH] CWE-122 CVE-2026-61932: Access of resource using incompatible type ('type confusion') in Windows DWM Core Library allows an Access of resource using incompatible type ('type confusion') in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-62701 [HIGH] CWE-416 CVE-2026-62701: 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-2026-50367 [HIGH] CWE-118 CVE-2026-50367: Incorrect access of indexable resource ('range error') in Windows Sensor Data Service allows an auth Incorrect access of indexable resource ('range error') in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.

CVE-2026-50421 [HIGH] CWE-843 CVE-2026-50421: Access of resource using incompatible type ('type confusion') in Windows Connected User Experiences Access of resource using incompatible type ('type confusion') in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.

CVE-2026-50425 [HIGH] CWE-416 CVE-2026-50425: Use after free in Windows Internal System User Profile allows an authorized attacker to elevate priv Use after free in Windows Internal System User Profile allows an authorized attacker to elevate privileges locally.

CVE-2026-50402 [HIGH] CWE-126 CVE-2026-50402: Incorrect conversion between numeric types in Windows NTFS allows an authorized attacker to elevate Incorrect conversion between numeric types in Windows NTFS allows an authorized attacker to elevate privileges locally.

CVE-2026-54109 [HIGH] CWE-122 CVE-2026-54109: Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

CVE-2026-50435 [HIGH] CWE-126 CVE-2026-50435: 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-2026-50293 [HIGH] CWE-416 CVE-2026-50293: Use after free in Windows Internal Task Bar allows an authorized attacker to elevate privileges loca Use after free in Windows Internal Task Bar allows an authorized attacker to elevate privileges locally.

CVE-2026-50670 [HIGH] CWE-20 CVE-2026-50670: 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-2026-58536 [HIGH] CWE-416 CVE-2026-58536: 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-2026-49800 [HIGH] CWE-122 CVE-2026-49800: Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authori Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.