Microsoft Windows 11 Version 24H2 vulnerabilities

CVE-2026-83840 [HIGH] CWE-1390 CVE-2026-83840: Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges l Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-69809 [HIGH] CWE-401 CVE-2026-69809: Missing release of memory after effective lifetime in Active Directory Domain Services allows an una Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.

CVE-2026-69428 [HIGH] CWE-125 CVE-2026-69428: Out-of-bounds read in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized at Out-of-bounds read in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.

CVE-2026-49788 [HIGH] CWE-770 CVE-2026-49788: Allocation of resources without limits or throttling in HTTP/2 allows an unauthorized attacker to de Allocation of resources without limits or throttling in HTTP/2 allows an unauthorized attacker to deny service over a network.

CVE-2026-44806 [HIGH] CWE-401 CVE-2026-44806: Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unaut Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to deny service over a network.

CVE-2026-70245 [HIGH] CWE-843 CVE-2026-70245: 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.

CVE-2026-83761 [HIGH] CWE-416 CVE-2026-83761: Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

CVE-2026-70303 [HIGH] CWE-787 CVE-2026-70303: Out-of-bounds write in Windows Kernel allows an authorized attacker to elevate privileges locally. Out-of-bounds write in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-45636 [HIGH] CWE-20 CVE-2026-45636: Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code 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-2025-59242 [HIGH] CWE-122 CVE-2025-59242: Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized att Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-83763 [HIGH] CWE-843 CVE-2026-83763: Access of resource using incompatible type ('type confusion') in Windows Input System allows an auth Access of resource using incompatible type ('type confusion') in Windows Input System allows an authorized attacker to elevate privileges locally.

CVE-2026-83927 [HIGH] CWE-59 CVE-2026-83927: Improper link resolution before file access ('link following') in Windows Registry allows an authori Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges 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-2026-70225 [HIGH] CWE-843 CVE-2026-70225: 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.

CVE-2026-70102 [HIGH] CWE-416 CVE-2026-70102: Use after free in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally. Use after free in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

CVE-2026-69884 [HIGH] CWE-126 CVE-2026-69884: Buffer over-read in Windows GDI allows an authorized attacker to elevate privileges locally. Buffer over-read in Windows GDI allows an authorized attacker to elevate privileges locally.

CVE-2025-64680 [HIGH] CWE-122 CVE-2025-64680: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-97798 [HIGH] CWE-88 CVE-2026-97798: Improper neutralization of argument delimiters in a command ('argument injection') in Windows Error Improper neutralization of argument delimiters in a command ('argument injection') in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-69289 [HIGH] CWE-59 CVE-2026-69289: Improper link resolution before file access ('link following') in Windows Setup Files Cleanup allows Improper link resolution before file access ('link following') in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.