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Vulnerabilities of Microsoft Windows Server 2019 (Server Core installation)

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CVE Summary Score Published
CVE-2026-69276 Integer underflow (wrap or wraparound) in Microsoft UxTheme Library (uxtheme.dll) allows an unauthorized attacker to… 9.8 Critical Sep 8, 2026
CVE-2026-65791 Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a… 9.8 Critical Aug 11, 2026
CVE-2026-62893 Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network 9.8 Critical Aug 11, 2026
CVE-2026-62878 Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network 9.8 Critical Aug 11, 2026
CVE-2026-57092 Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network 9.9 Critical Jul 14, 2026
CVE-2026-56188 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Network… 9.8 Critical Jul 14, 2026
CVE-2026-56190 Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network 9.8 Critical Jul 14, 2026
CVE-2026-56159 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-2026-50518 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-2026-50447 Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability 9.8 Critical 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-2026-49798 Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally 9.3 Critical Jul 14, 2026
CVE-2026-49172 Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network 9.8 Critical Jul 14, 2026
CVE-2026-42990 Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network 9.8 Critical Jul 14, 2026
CVE-2026-44815 Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network 9.8 Critical Jun 9, 2026
CVE-2026-45602 No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network 9.1 Critical Jun 9, 2026
CVE-2026-47291 Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network 9.8 Critical Jun 9, 2026
CVE-2026-41089 Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network 9.8 Critical May 12, 2026
CVE-2026-33824 Exploited Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability 9.8 Critical Apr 14, 2026
CVE-2025-60724 Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a… 9.8 Critical Nov 11, 2025
CVE-2025-59287 Exploited Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability 9.8 Critical Oct 14, 2025
CVE-2025-49708 Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges over a network 9.9 Critical Oct 14, 2025
CVE-2025-53766 Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network 9.8 Critical Aug 12, 2025
CVE-2025-47981 Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over a… 9.8 Critical Jul 8, 2025
CVE-2025-21307 Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability 9.8 Critical Jan 14, 2025

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