Microsoft Windows Server 2025 vulnerabilities

CVE-2026-83635 [HIGH] CWE-125 CVE-2026-83635: Out-of-bounds read in DNS Server allows an unauthorized attacker to deny service over a network. Out-of-bounds read in DNS Server allows an unauthorized attacker to deny service over a network.

CVE-2025-50173 [HIGH] CWE-1390 CVE-2025-50173: Weak authentication in Windows Installer allows an authorized attacker to elevate privileges locally Weak authentication in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-70133 [HIGH] CWE-770 CVE-2026-70133: Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized at Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny service over a network.

CVE-2026-83647 [HIGH] CWE-125 CVE-2026-83647: Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny servi Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.

CVE-2026-33096 [HIGH] CWE-125 CVE-2026-33096: Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a networ Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.

CVE-2026-50328 [HIGH] CWE-20 CVE-2026-50328: Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampe Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

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-2026-20941 [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-2026-83645 [HIGH] CWE-770 CVE-2026-83645: Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

CVE-2026-83704 [HIGH] CWE-59 CVE-2026-83704: Improper link resolution before file access ('link following') in Microsoft Windows Search Component Improper link resolution before file access ('link following') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-58610 [HIGH] CWE-122 CVE-2026-58610: 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-2026-50362 [HIGH] CWE-122 CVE-2026-50362: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker t Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code 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-2026-50462 [HIGH] CWE-73 CVE-2026-50462: External control of file name or path in Windows Ancillary Function Driver for WinSock allows an aut External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-68887 [HIGH] CWE-125 CVE-2026-68887: Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to deny Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to deny service over a network.

CVE-2026-69329 [HIGH] CWE-125 CVE-2026-69329: Out-of-bounds read in BranchCache allows an unauthorized attacker to deny service over a network. Out-of-bounds read in BranchCache allows an unauthorized attacker to deny service over a network.

CVE-2026-54113 [HIGH] CWE-770 CVE-2026-54113: Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attack Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attacker to deny service over a network.

CVE-2026-59132 [HIGH] CWE-476 CVE-2026-59132: 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-2026-50647 [HIGH] CWE-835 CVE-2026-50647: Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD F Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

CVE-2026-58627 [HIGH] CWE-400 CVE-2026-58627: Uncontrolled resource consumption in Windows DHCP Server allows an unauthorized attacker to deny ser Uncontrolled resource consumption in Windows DHCP Server allows an unauthorized attacker to deny service over a network.