Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-54990 [HIGH] CWE-122 CVE-2026-54990: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-85817 [HIGH] CWE-807 CVE-2026-85817: Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized att Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.

CVE-2026-88116 [HIGH] CWE-822 CVE-2026-88116: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-88112 [HIGH] CWE-822 CVE-2026-88112: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-85903 [HIGH] CWE-822 CVE-2026-85903: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-88114 [HIGH] CWE-822 CVE-2026-88114: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-83929 [HIGH] CWE-787 CVE-2026-83929: Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network. Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.

CVE-2026-62817 [HIGH] CWE-787 CVE-2026-62817: Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-62816 [HIGH] CWE-122 CVE-2026-62816: Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized at Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-54982 [HIGH] CWE-191 CVE-2026-54982: Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an una Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent 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-2026-40403 [HIGH] CWE-122 CVE-2026-40403: Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code lo Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code 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-2026-24283 [HIGH] CWE-122 CVE-2026-24283: Heap-based buffer overflow in Windows File Server allows an authorized attacker to elevate privilege Heap-based buffer overflow in Windows File Server allows an authorized attacker to elevate privileges locally.

CVE-2026-69603 [HIGH] CWE-122 CVE-2026-69603: Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.

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-2026-100218 [HIGH] CWE-416 CVE-2026-100218: Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code ove Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.

CVE-2026-78449 [HIGH] CWE-416 CVE-2026-78449: Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to ex Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

CVE-2026-72981 [HIGH] CWE-416 CVE-2026-72981: Use after free in IP Helper allows an unauthorized attacker to execute code over a network. Use after free in IP Helper allows an unauthorized attacker to execute code over a network.

CVE-2026-69786 [HIGH] CWE-122 CVE-2026-69786: Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code o Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.