Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-49783 [HIGH] CWE-358 CVE-2026-49783: Improperly implemented security check for standard in Windows Secure Boot allows an authorized attac Improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

CVE-2026-50331 [HIGH] CWE-416 CVE-2026-50331: Use after free in Windows Application Model allows an authorized attacker to elevate privileges loca Use after free in Windows Application Model allows an authorized attacker to elevate privileges locally.

CVE-2026-35415 [HIGH] CWE-190 CVE-2026-35415: Integer overflow or wraparound in Windows Storage Spaces Controller allows an authorized attacker to Integer overflow or wraparound in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

CVE-2026-40405 [HIGH] CWE-476 CVE-2026-40405: Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a ne Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

CVE-2026-42837 [HIGH] CWE-125 CVE-2026-42837: Out-of-bounds read in Windows Projected File System Filter Driver allows an authorized attacker to e Out-of-bounds read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-42828 [HIGH] CWE-126 CVE-2026-42828: Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to ele Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-97799 [HIGH] CWE-347 CVE-2026-97799: Improper verification of cryptographic signature in Windows Audio Service allows an authorized attac Improper verification of cryptographic signature in Windows Audio Service allows an authorized attacker to elevate privileges locally.

CVE-2026-97830 [HIGH] CWE-415 CVE-2026-97830: Double free in Windows Internet Information Services allows an unauthorized attacker to deny service Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

CVE-2026-85338 [HIGH] CWE-125 CVE-2026-85338: Out-of-bounds read in Microsoft Graphics Component allows an authorized attacker to elevate privileg Out-of-bounds read in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

CVE-2026-96862 [HIGH] CWE-125 CVE-2026-96862: Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges loca Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

CVE-2025-53768 [HIGH] CWE-362 CVE-2025-53768: Use after free in Xbox allows an authorized attacker to elevate privileges locally. Use after free in Xbox allows an authorized attacker to elevate privileges locally.

CVE-2026-97792 [HIGH] CWE-732 CVE-2026-97792: Improper access control in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an auth Improper access control in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-85796 [HIGH] CWE-121 CVE-2026-85796: Numeric truncation error in Windows Installer allows an authorized attacker to elevate privileges lo Numeric truncation error in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-88194 [HIGH] CWE-125 CVE-2026-88194: 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-2026-88182 [HIGH] CWE-416 CVE-2026-88182: Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privil Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-88181 [HIGH] CWE-125 CVE-2026-88181: 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-2026-88188 [HIGH] CWE-125 CVE-2026-88188: 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-2026-96867 [HIGH] CWE-125 CVE-2026-96867: Out-of-bounds read in Windows NTFS allows an authorized attacker to execute code locally. Out-of-bounds read in Windows NTFS allows an authorized attacker to execute code locally.

CVE-2026-88179 [HIGH] CWE-125 CVE-2026-88179: 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-2025-59187 [HIGH] CWE-20 CVE-2025-59187: Improper input validation in Windows Kernel allows an authorized attacker to elevate privileges loca Improper input validation in Windows Kernel allows an authorized attacker to elevate privileges locally.