Microsoft Windows 11 Version 25H2 vulnerabilities

CVE-2026-34336 [HIGH] CWE-122 CVE-2026-34336: Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-88189 [HIGH] CWE-125 CVE-2026-88189: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-88180 [HIGH] CWE-125 CVE-2026-88180: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-96306 [HIGH] CWE-125 CVE-2026-96306: Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges lo Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges locally.

CVE-2026-88177 [HIGH] CWE-125 CVE-2026-88177: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-26184 [HIGH] CWE-126 CVE-2026-26184: Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privilege Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privileges locally.

CVE-2026-50673 [HIGH] CWE-367 CVE-2026-50673: Null pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges local Null pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-21247 [HIGH] CWE-20 CVE-2026-21247: Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally. Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.

CVE-2026-68846 [HIGH] CWE-416 CVE-2026-68846: Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network. Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.

CVE-2026-69336 [HIGH] CWE-122 CVE-2026-69336: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVE-2026-68889 [HIGH] CWE-122 CVE-2026-68889: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVE-2026-69366 [HIGH] CWE-416 CVE-2026-69366: Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network. Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.

CVE-2026-69272 [HIGH] CWE-122 CVE-2026-69272: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVE-2026-69313 [HIGH] CWE-122 CVE-2026-69313: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVE-2026-83708 [HIGH] CWE-121 CVE-2026-83708: Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-97817 [MEDIUM] CWE-122 CVE-2026-97817: Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network.

CVE-2026-72961 [HIGH] CWE-122 CVE-2026-72961: Out-of-bounds read in Windows Hyper-V allows an authorized attacker to elevate privileges locally. Out-of-bounds read in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2026-69694 [HIGH] CWE-502 CVE-2026-69694: Deserialization of untrusted data in Windows IP Address Management (IPAM) Service allows an authoriz Deserialization of untrusted data in Windows IP Address Management (IPAM) Service allows an authorized attacker to elevate privileges locally.

CVE-2026-21241 [HIGH] CWE-416 CVE-2026-21241: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to ele Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-25190 [HIGH] CWE-426 CVE-2026-25190: Untrusted search path in Windows GDI allows an unauthorized attacker to execute code locally. Untrusted search path in Windows GDI allows an unauthorized attacker to execute code locally.