Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-50400 [HIGH] CWE-121 CVE-2026-50400: Stack-based buffer overflow in Windows App Installer allows an authorized attacker to elevate privil Stack-based buffer overflow in Windows App Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-57096 [HIGH] CWE-122 CVE-2026-57096: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

CVE-2026-50318 [HIGH] CWE-121 CVE-2026-50318: Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-50387 [HIGH] CWE-121 CVE-2026-50387: Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges local Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

CVE-2026-88093 [HIGH] CWE-122 CVE-2026-88093: Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privil Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-20849 [HIGH] CWE-807 CVE-2026-20849: Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacke Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

CVE-2026-69793 [HIGH] CWE-1288 CVE-2026-69793: Improper validation of consistency within input in Windows TCP/IP allows an unauthorized attacker to Improper validation of consistency within input in Windows TCP/IP allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-70095 [HIGH] CWE-122 CVE-2026-70095: Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a network.

CVE-2026-96071 [HIGH] CWE-122 CVE-2026-96071: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.

CVE-2026-69602 [HIGH] CWE-416 CVE-2026-69602: Use after free in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges o Use after free in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges over a network.

CVE-2026-69706 [HIGH] CWE-416 CVE-2026-69706: Use after free in Windows Win32K allows an authorized attacker to elevate privileges over a network. Use after free in Windows Win32K allows an authorized attacker to elevate privileges over a network.

CVE-2026-69597 [HIGH] CWE-416 CVE-2026-69597: Use after free in Windows HTTP.sys allows an authorized attacker to elevate privileges over a networ Use after free in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.

CVE-2026-78446 [HIGH] CWE-416 CVE-2026-78446: Use after free in Windows Distributed File System (DFS) allows an authorized attacker to execute cod Use after free in Windows Distributed File System (DFS) allows an authorized attacker to execute code over a network.

CVE-2026-85798 [HIGH] CWE-122 CVE-2026-85798: Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized attacker to execute code over a network.

CVE-2025-59199 [HIGH] CWE-284 CVE-2025-59199: Improper access control in Software Protection Platform (SPP) allows an authorized attacker to eleva Improper access control in Software Protection Platform (SPP) allows an authorized attacker to elevate privileges locally.

CVE-2026-88091 [HIGH] CWE-502 CVE-2026-88091: Deserialization of untrusted data in Windows Management Instrumentation allows an authorized attacke Deserialization of untrusted data in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

CVE-2026-49795 [HIGH] CWE-416 CVE-2026-49795: 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-2026-50382 [HIGH] CWE-822 CVE-2026-50382: Untrusted pointer dereference in Windows DirectX allows an authorized attacker to execute code local Untrusted pointer dereference in Windows DirectX allows an authorized attacker to execute code locally.

CVE-2026-96914 [HIGH] CWE-122 CVE-2026-96914: Integer overflow or wraparound in Windows Virtualization-Based Security (VBS) Enclave allows an auth Integer overflow or wraparound in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

CVE-2026-69945 [HIGH] CWE-862 CVE-2026-69945: Missing authorization in Windows AppX Deployment Extensions allows an authorized attacker to elevate Missing authorization in Windows AppX Deployment Extensions allows an authorized attacker to elevate privileges locally.