Microsoft Windows 11 Version 25H2 vulnerabilities

CVE-2026-50313 [HIGH] CWE-122 CVE-2026-50313: Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

CVE-2026-50448 [HIGH] CWE-122 CVE-2026-50448: Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

CVE-2026-49796 [HIGH] CWE-122 CVE-2026-49796: Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.

CVE-2026-50461 [HIGH] CWE-122 CVE-2026-50461: Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

CVE-2026-49797 [HIGH] CWE-122 CVE-2026-49797: Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

CVE-2026-50655 [HIGH] CWE-122 CVE-2026-50655: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.

CVE-2026-50386 [HIGH] CWE-122 CVE-2026-50386: Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

CVE-2025-64679 [HIGH] CWE-122 CVE-2025-64679: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-85884 [HIGH] CWE-306 CVE-2026-85884: Missing authentication for critical function in Windows Health and Optimized Experiences Service all Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.

CVE-2026-48574 [HIGH] CWE-122 CVE-2026-48574: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.

CVE-2026-83769 [HIGH] CWE-416 CVE-2026-83769: Use after free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally. Use after free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.

CVE-2026-73027 [HIGH] CWE-15 CVE-2026-73027: External control of system or configuration setting in Windows Setup Files Cleanup allows an authori External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.

CVE-2026-70151 [HIGH] CWE-416 CVE-2026-70151: Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges loc Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

CVE-2026-83732 [HIGH] CWE-416 CVE-2026-83732: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVE-2026-83913 [HIGH] CWE-416 CVE-2026-83913: Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-83690 [HIGH] CWE-416 CVE-2026-83690: Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-49791 [HIGH] CWE-59 CVE-2026-49791: Improper link resolution before file access ('link following') in Windows Routing and Remote Access Improper link resolution before file access ('link following') in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

CVE-2026-83876 [HIGH] CWE-416 CVE-2026-83876: Use after free in Windows Shell allows an authorized attacker to elevate privileges locally. Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.

CVE-2026-70023 [HIGH] CWE-416 CVE-2026-70023: Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally. Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2026-83883 [HIGH] CWE-416 CVE-2026-83883: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.