Microsoft Windows Server 2016 vulnerabilities

CVE-2026-49787 High · 7.5 CWE-770 Jul 14, 2026

HTTP.sys Denial of Service Vulnerability

Allocation of resources without limits or throttling in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.

CVE-2026-49790 High · 7.8 CWE-122 Jul 14, 2026

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

CVE-2026-49789 High · 7.8 CWE-121 Jul 14, 2026

Windows NTFS Elevation of Privilege Vulnerability

Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.

CVE-2026-49784 High · 7.0 CWE-362 Jul 14, 2026

Microsoft Windows App Store Elevation of Privilege Vulnerability

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

CVE-2026-49783 High · 7.8 CWE-358 Jul 14, 2026

Secure Boot Security Feature Bypass Vulnerability

Improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

CVE-2026-49184 High · 7.8 CWE-122 Jul 14, 2026

Windows NTFS Remote Code Execution Vulnerability

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

CVE-2026-49181 Critical · 9.8 CWE-191 Jul 14, 2026

Windows DHCP Client Elevation of Privilege Vulnerability

Integer underflow (wrap or wraparound) in Windows DHCP Client allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-49180 Medium · 5.5 CWE-59 Jul 14, 2026

Universal Plug and Play (upnp.dll) Information Disclosure Vulnerability

Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.

CVE-2026-49178 High · 8.8 CWE-122 Jul 14, 2026

Windows Active Directory Domain Services Remote Code Execution Vulnerability

Heap-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

CVE-2026-49176 High · 7.8 CWE-59 Jul 14, 2026

Windows WalletService Elevation of Privilege Vulnerability

Improper privilege management in Windows WalletService allows an authorized attacker to elevate privileges locally.

CVE-2026-49171 High · 7.8 CWE-416 Jul 14, 2026

Windows Speech Runtime Elevation of Privilege Vulnerability

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

CVE-2026-49168 Medium · 6.8 CWE-190 Jul 14, 2026

Storage Spaces Direct Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Storage Spaces Direct allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-49165 High · 7.1 CWE-908 Jul 14, 2026

Microsoft Windows App Store Information Disclosure Vulnerability

Use of uninitialized resource in Microsoft Windows App Store allows an authorized attacker to disclose information locally.

CVE-2026-49164 Critical · 9.8 CWE-122 Jul 14, 2026

Windows Active Directory Domain Services Remote Code Execution Vulnerability

Heap-based buffer overflow in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

CVE-2026-48564 High · 8.8 CWE-122 Jul 14, 2026

DHCP Server Service Remote Code Execution Vulnerability

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

CVE-2026-44806 High · 7.5 CWE-401 Jul 14, 2026

Windows Secure Channel Denial of Service Vulnerability

Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to deny service over a network.

CVE-2026-42990 Critical · 9.8 CWE-122 Jul 14, 2026

SQL Server ODBC driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.

CVE-2026-42982 High · 7.8 CWE-1288 Jul 14, 2026

Windows Secure Kernel Mode Elevation of Privilege Vulnerability

Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

CVE-2026-42975 High · 8.8 CWE-122 Jul 14, 2026

Windows Bluetooth Port Driver Remote Code Execution

Heap-based buffer overflow in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-42900 High · 8.1 CWE-362 Jul 14, 2026

Microsoft Windows App Store Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-41087 Medium · 5.5 CWE-200 Jul 14, 2026

Windows File Explorer Information Disclosure Vulnerability

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

CVE-2026-40422 Medium · 5.5 CWE-908 Jul 14, 2026

Windows File Explorer Information Disclosure Vulnerability

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

CVE-2026-40400 High · 8.0 CWE-23 Jul 14, 2026

Windows PowerShell Remote Code Execution Vulnerability

Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.

CVE-2026-40378 High · 7.5 CWE-789 Jul 14, 2026

Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability

Memory allocation with excessive size value in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.

CVE-2026-34346 Medium · 5.5 CWE-319 Jul 14, 2026

Windows Ancillary Function Driver for WinSock Information Disclosure Vulnerability

Cleartext transmission of sensitive information in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.