Microsoft Windows 11 23H2 vulnerabilities

CVE-2026-69576 [HIGH] CWE-416 CVE-2026-69576: Use after free in Graphic Fonts allows an authorized attacker to elevate privileges locally. Use after free in Graphic Fonts allows an authorized attacker to elevate privileges locally.

CVE-2026-69571 [HIGH] CWE-122 CVE-2026-69571: Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized att Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-65775 [HIGH] CWE-416 CVE-2026-65775: 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-2026-62707 [HIGH] CWE-416 CVE-2026-62707: Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate pr Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

CVE-2026-62711 [HIGH] CWE-416 CVE-2026-62711: 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-2026-40399 [HIGH] CWE-121 CVE-2026-40399: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

CVE-2026-34343 [HIGH] CWE-122 CVE-2026-34343: Heap-based buffer overflow in Windows Application Identity (AppID) Subsystem allows an authorized at Heap-based buffer overflow in Windows Application Identity (AppID) Subsystem allows an authorized attacker to elevate privileges locally.

CVE-2026-85833 [HIGH] CWE-416 CVE-2026-85833: Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate pr Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

CVE-2026-96308 [HIGH] CWE-416 CVE-2026-96308: Use after free in Windows Installer allows an authorized attacker to elevate privileges locally. Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-45641 [HIGH] CWE-843 CVE-2026-45641: Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthori Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.

CVE-2026-87700 [HIGH] CWE-416 CVE-2026-87700: Use after free in Windows Installer allows an authorized attacker to elevate privileges locally. Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-34333 [HIGH] CWE-190 CVE-2026-34333: Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

CVE-2026-85322 [HIGH] CWE-908 CVE-2026-85322: Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthor Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

CVE-2026-71330 [HIGH] CWE-497 CVE-2026-71330: Exposure of sensitive system information to an unauthorized control sphere in Windows Services for N Exposure of sensitive system information to an unauthorized control sphere in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to disclose information over a network.

CVE-2026-70587 [HIGH] CWE-170 CVE-2026-70587: Improper null termination in Windows Remote Desktop Protocol allows an unauthorized attacker to disc Improper null termination in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a network.

CVE-2026-81355 [HIGH] CWE-122 CVE-2026-81355: Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to execute code locally.

CVE-2026-48583 [HIGH] CWE-416 CVE-2026-48583: 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-2026-69864 [HIGH] CWE-416 CVE-2026-69864: Use after free in Windows Hello allows an authorized attacker to elevate privileges locally. Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.

CVE-2026-26159 [HIGH] CWE-306 CVE-2026-26159: Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an a Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.

CVE-2023-35644 [HIGH] CWE-190 CVE-2023-35644: Windows Sysmain Service Elevation of Privilege Vulnerability Windows Sysmain Service Elevation of Privilege Vulnerability