Microsoft Windows Server 2016 vulnerabilities

CVE-2026-54121 High · 8.8 CWE-285 Jul 14, 2026

Active Directory Certificate Services Elevation of Privilege Vulnerability

Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.

CVE-2026-54115 High · 7.8 CWE-122 Jul 14, 2026

Windows Message Queuing (MSMQ) Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Active Directory allows an authorized attacker to elevate privileges locally.

CVE-2026-50692 High · 8.8 CWE-122 Jul 14, 2026

Desktop Window Manager Elevation of Privilege Vulnerability

Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-50690 Medium · 5.5 CWE-908 Jul 14, 2026

Windows SMB Information Disclosure Vulnerability

Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.

CVE-2026-50688 High · 7.8 CWE-416 Jul 14, 2026

Windows Win32k Elevation of Privilege Vulnerability

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-50686 High · 8.1 CWE-843 Jul 14, 2026

Windows OLE Remote Code Execution Vulnerability

Access of resource using incompatible type ('type confusion') in Windows OLE allows an unauthorized attacker to execute code over a network.

CVE-2026-50685 High · 7.5 CWE-415 Jul 14, 2026

Windows DHCP Server Remote Code Execution Vulnerability

Double free in Windows DHCP Server allows an authorized attacker to execute code over a network.

CVE-2026-50684 Medium · 4.8 CWE-79 Jul 14, 2026

Active Directory Federation Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.

CVE-2026-50683 High · 8.0 CWE-122 Jul 14, 2026

Windows DHCP Client Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to elevate privileges over an adjacent network.

CVE-2026-50681 Medium · 5.5 CWE-200 Jul 14, 2026

Windows Secure Channel Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized attacker to disclose information locally.

CVE-2026-50673 High · 7.8 CWE-367 Jul 14, 2026

Windows Kernel Elevation of Privilege Vulnerability

Null pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-50669 High · 7.0 CWE-362 Jul 14, 2026

Windows Telephony Server Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.

CVE-2026-50668 Medium · 6.8 CWE-122 Jul 14, 2026

Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-50667 High · 7.0 CWE-362 Jul 14, 2026

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an authorized attacker to elevate privileges locally.

CVE-2026-50666 High · 8.8 CWE-416 Jul 14, 2026

Windows Remote Access Elevation of Privilege Vulnerability

Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges over a network.

CVE-2026-50661 Medium · 4.6 CWE-693 Jul 14, 2026

Windows BitLocker Security Feature Bypass Vulnerability

Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.

CVE-2026-50655 High · 7.8 CWE-122 Jul 14, 2026

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.

CVE-2026-50647 High · 7.5 CWE-835 Jul 14, 2026

Active Directory Federation Server Denial of Service Vulnerability

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-2026-50518 Critical · 9.8 CWE-122 Jul 14, 2026

Windows DHCP Server Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.

CVE-2026-50509 High · 7.8 CWE-502 Jul 14, 2026

Wireless Wide Area Network Service (WwanSvc) Elevation of Privilege Vulnerability

Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate privileges locally.

CVE-2026-50505 High · 8.8 CWE-416 Jul 14, 2026

Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability

Use after free in Windows Message Queuing allows an authorized attacker to execute code over a network.

CVE-2026-50504 High · 7.5 CWE-126 Jul 14, 2026

Windows Remote Desktop Client Information Disclosure Vulnerability

Buffer over-read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.

CVE-2026-50502 High · 8.8 CWE-1220 Jul 14, 2026

Windows Event Logging Service Remote Code Execution Vulnerability

Insufficient granularity of access control in Windows Event Logging Service allows an authorized attacker to execute code over a network.

CVE-2026-50500 High · 8.8 CWE-416 Jul 14, 2026

Windows Netlogon Elevation of Privilege Vulnerability

Use after free in Windows Netlogon allows an authorized attacker to elevate privileges over a network.

CVE-2026-50498 High · 7.8 CWE-125 Jul 14, 2026

Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability