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

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CVE Summary Score Published
CVE-2026-50341 Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally 5.5 Medium Jul 14, 2026
CVE-2026-50407 Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges… 7.8 High Jul 14, 2026
CVE-2026-50327 Heap-based buffer overflow in Windows Media allows an authorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50380 Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network 9.6 Critical Jul 14, 2026
CVE-2026-50313 Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50326 Use after free in Windows Unified Consent System allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50368 Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over… 7.5 High Jul 14, 2026
CVE-2026-50307 Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50419 Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose… 3.3 Low Jul 14, 2026
CVE-2026-50400 Stack-based buffer overflow in Windows App Installer allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50309 Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50337 Incorrect type conversion or cast in Windows Notification allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50386 Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50393 Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50412 Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50306 Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50360 Incorrect implementation of authentication algorithm in Windows SMB Server allows an authorized attacker to elevate… 8.8 High Jul 14, 2026
CVE-2026-50328 Uncaught exception in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network 7.5 High Jul 14, 2026
CVE-2026-50304 Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over… 7.5 High Jul 14, 2026
CVE-2026-50392 Use after free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50329 Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50363 Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50305 Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50332 Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50372 Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026

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