Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-56181 [HIGH] CWE-346 CVE-2026-56181: Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.

CVE-2026-25181 [HIGH] CWE-125 CVE-2026-25181: Out-of-bounds read in Windows GDI+ allows an unauthorized attacker to disclose information over a ne Out-of-bounds read in Windows GDI+ allows an unauthorized attacker to disclose information over a network.

CVE-2026-32183 [HIGH] CWE-77 CVE-2026-32183: Improper neutralization of special elements used in a command ('command injection') in Windows Snipp Improper neutralization of special elements used in a command ('command injection') in Windows Snipping Tool allows an unauthorized attacker to execute code locally.

CVE-2026-20811 [HIGH] CWE-822 CVE-2026-20811: Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an au Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

CVE-2026-20941 [HIGH] CWE-59 CVE-2026-20941: Improper link resolution before file access ('link following') in Host Process for Windows Tasks all Improper link resolution before file access ('link following') in Host Process for Windows Tasks allows an authorized attacker to elevate privileges locally.

CVE-2026-20859 [HIGH] CWE-416 CVE-2026-20859: Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges lo Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVE-2026-32152 [HIGH] CWE-416 CVE-2026-32152: Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-58613 [HIGH] CWE-416 CVE-2026-58613: Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate pr Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-50454 [HIGH] CWE-23 CVE-2026-50454: Relative path traversal in Windows User Interface Core allows an authorized attacker to elevate priv Relative path traversal in Windows User Interface Core allows an authorized attacker to elevate privileges locally.

CVE-2026-26179 [HIGH] CWE-415 CVE-2026-26179: Double free in Windows Kernel allows an authorized attacker to elevate privileges locally. Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-35424 [HIGH] CWE-401 CVE-2026-35424: Missing release of memory after effective lifetime in Windows Internet Key Exchange (IKE) Protocol a Missing release of memory after effective lifetime in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

CVE-2025-59201 [HIGH] CWE-284 CVE-2025-59201: Improper access control in Network Connection Status Indicator (NCSI) allows an authorized attacker Improper access control in Network Connection Status Indicator (NCSI) allows an authorized attacker to elevate privileges locally.

CVE-2026-26156 [HIGH] CWE-20 CVE-2026-26156: Heap-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code locall Heap-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code locally.

CVE-2026-32154 [HIGH] CWE-416 CVE-2026-32154: Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

CVE-2025-62571 [HIGH] CWE-20 CVE-2025-62571: Improper input validation in Windows Installer allows an authorized attacker to elevate privileges l Improper input validation in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-24292 [HIGH] CWE-416 CVE-2026-24292: Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to eleva Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.

CVE-2026-54993 [HIGH] CWE-122 CVE-2026-54993: 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 locally.

CVE-2026-50312 [HIGH] CWE-416 CVE-2026-50312: 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-2026-42916 [HIGH] CWE-190 CVE-2026-42916: Integer overflow or wraparound in Windows NT OS Kernel allows an authorized attacker to elevate priv Integer overflow or wraparound in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-41088 [HIGH] CWE-73 CVE-2026-41088: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver f Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.