Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-50380 [CRITICAL] CWE-122 CVE-2026-50380: Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a ne Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.

CVE-2026-40369 [HIGH] CWE-822 CVE-2026-40369: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-20840 [HIGH] CWE-122 CVE-2026-20840: Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

CVE-2025-59295 [HIGH] CWE-122 CVE-2025-59295: Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over a network.

CVE-2026-57094 [HIGH] CWE-122 CVE-2026-57094: Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

CVE-2026-50500 [HIGH] CWE-416 CVE-2026-50500: Use after free in Windows Netlogon allows an authorized attacker to elevate privileges over a networ Use after free in Windows Netlogon allows an authorized attacker to elevate privileges over a network.

CVE-2026-25188 [HIGH] CWE-122 CVE-2026-25188: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate p Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.

CVE-2026-33827 [HIGH] CWE-362 CVE-2026-33827: 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 unauthorized attacker to execute code over a network.

CVE-2026-24294 [HIGH] CWE-287 CVE-2026-24294: Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges lo Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.

CVE-2026-32157 [HIGH] CWE-416 CVE-2026-32157: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-50474 [HIGH] CWE-416 CVE-2026-50474: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-47653 [HIGH] CWE-416 CVE-2026-47653: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-50340 [HIGH] CWE-416 CVE-2026-50340: Use after free in Windows Runtime allows an authorized attacker to elevate privileges over a network Use after free in Windows Runtime allows an authorized attacker to elevate privileges over a network.

CVE-2026-34329 [HIGH] CWE-122 CVE-2026-34329: Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute cod Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-42975 [HIGH] CWE-122 CVE-2026-42975: Heap-based buffer overflow in Windows Bluetooth Port Driver allows an unauthorized attacker to execu Heap-based buffer overflow in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-50692 [HIGH] CWE-122 CVE-2026-50692: 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-2026-54999 [HIGH] CWE-362 CVE-2026-54999: 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 unauthorized attacker to execute code over an adjacent network.

CVE-2026-40398 [HIGH] CWE-122 CVE-2026-40398: Heap-based buffer overflow in Windows Remote Desktop allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows Remote Desktop 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-2026-54986 [HIGH] CWE-122 CVE-2026-54986: Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.