Skip to content

Known vulnerabilities in Microsoft Windows Server 2025 (Server Core installation)

Is your version affected?

CVE Summary Score Published
CVE-2026-50670 Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally 8.8 High Jul 14, 2026
CVE-2026-50672 Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50668 Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack 6.8 Medium Jul 14, 2026
CVE-2026-50669 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service… 7.0 High Jul 14, 2026
CVE-2026-50666 Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges over a… 8.8 High Jul 14, 2026
CVE-2026-50667 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an… 7.8 High Jul 14, 2026
CVE-2026-50661 Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a… 6.1 Medium Jul 14, 2026
CVE-2026-50655 Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50647 Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an… 7.5 High Jul 14, 2026
CVE-2026-50518 Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network 9.8 Critical Jul 14, 2026
CVE-2026-50509 Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate… 7.8 High Jul 14, 2026
CVE-2026-50496 Out-of-bounds read in Windows Network Policy Server SNMP allows an unauthorized attacker to disclose information over… 7.5 High Jul 14, 2026
CVE-2026-50504 Buffer over-read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network 6.5 Medium Jul 14, 2026
CVE-2026-50497 Off-by-one error in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a… 6.5 Medium Jul 14, 2026
CVE-2026-50501 Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code… 7.8 High Jul 14, 2026
CVE-2026-50503 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an… 7.0 High Jul 14, 2026
CVE-2026-50491 Out-of-bounds read in Code Integrity DLL (ci.dll) allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50492 Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code… 6.8 Medium Jul 14, 2026
CVE-2026-50505 Use after free in Windows Message Queuing allows an authorized attacker to execute code over a network 7.5 High Jul 14, 2026
CVE-2026-50498 Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability 7.8 High Jul 14, 2026
CVE-2026-50490 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50489 Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally 8.8 High Jul 14, 2026
CVE-2026-50494 Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50499 Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges… 7.8 High Jul 14, 2026
CVE-2026-50488 Improper neutralization of special elements used in a command ('command injection') in Windows Clipboard User Service… 7.8 High Jul 14, 2026

Other Microsoft products