Microsoft Windows 11 23H2 vulnerabilities

CVE-2025-54099 [HIGH] CWE-121 CVE-2025-54099: Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized at Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2025-58725 [HIGH] CWE-122 CVE-2025-58725: Heap-based buffer overflow in Windows COM allows an authorized attacker to elevate privileges locall Heap-based buffer overflow in Windows COM allows an authorized attacker to elevate privileges locally.

CVE-2026-20847 [MEDIUM] CWE-200 CVE-2026-20847: Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized att Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network.

CVE-2024-26254 [HIGH] CWE-822 CVE-2024-26254: Microsoft Virtual Machine Bus (VMBus) Denial of Service Vulnerability Microsoft Virtual Machine Bus (VMBus) Denial of Service Vulnerability

CVE-2025-21220 [HIGH] CWE-908 CVE-2025-21220: Microsoft Message Queuing Information Disclosure Vulnerability Microsoft Message Queuing Information Disclosure Vulnerability

CVE-2023-36399 [HIGH] CWE-59 CVE-2023-36399: Windows Storage Elevation of Privilege Vulnerability Windows Storage Elevation of Privilege Vulnerability

CVE-2025-24994 [HIGH] CWE-284 CVE-2025-24994: Improper access control in Windows Cross Device Service allows an authorized attacker to elevate pri Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.

CVE-2025-27491 [HIGH] CWE-416 CVE-2025-27491: Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network. Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network.

CVE-2024-26232 [HIGH] CWE-843 CVE-2024-26232: Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability

CVE-2024-43581 [HIGH] CWE-73 CVE-2024-43581: Microsoft OpenSSH for Windows Remote Code Execution Vulnerability Microsoft OpenSSH for Windows Remote Code Execution Vulnerability

CVE-2026-40414 [HIGH] CWE-476 CVE-2026-40414: Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an a Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an adjacent network.

CVE-2025-32721 [HIGH] CWE-59 CVE-2025-32721: Improper link resolution before file access ('link following') in Windows Recovery Driver allows an Improper link resolution before file access ('link following') in Windows Recovery Driver allows an authorized attacker to elevate privileges locally.

CVE-2025-49682 [HIGH] CWE-416 CVE-2025-49682: Use after free in Windows Media allows an authorized attacker to elevate privileges locally. Use after free in Windows Media allows an authorized attacker to elevate privileges locally.

CVE-2024-30076 [MEDIUM] CWE-59 CVE-2024-30076: Windows Container Manager Service Elevation of Privilege Vulnerability Windows Container Manager Service Elevation of Privilege Vulnerability

CVE-2026-26151 [HIGH] CWE-357 CVE-2026-26151: Insufficient ui warning of dangerous operations in Windows Remote Desktop allows an unauthorized att Insufficient ui warning of dangerous operations in Windows Remote Desktop allows an unauthorized attacker to perform spoofing over a network.

CVE-2025-59214 [MEDIUM] CWE-200 CVE-2025-59214: Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauth Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-21508 [HIGH] CWE-287 CVE-2026-21508: Improper authentication in Windows Storage allows an authorized attacker to elevate privileges local Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.

CVE-2025-49727 [HIGH] CWE-122 CVE-2025-49727: Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privile Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

CVE-2025-55340 [HIGH] CWE-287 CVE-2025-55340: Improper authentication in Windows Remote Desktop Protocol allows an authorized attacker to bypass a Improper authentication in Windows Remote Desktop Protocol allows an authorized attacker to bypass a security feature locally.

CVE-2026-25171 [HIGH] CWE-416 CVE-2026-25171: Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.