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Known vulnerabilities in Microsoft Windows Server 2016

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CVE Summary Score Published
CVE-2026-70248 Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally 6.5 Medium Oct 13, 2026
CVE-2026-70275 Untrusted pointer dereference in Windows CD-ROM Driver allows an unauthorized attacker to execute code over a network 8.8 High Oct 13, 2026
CVE-2026-70241 Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70286 Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83909 Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an… 4.7 Medium Oct 13, 2026
CVE-2026-83867 Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83879 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Overlay Filter… 7.0 High Oct 13, 2026
CVE-2026-83896 Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83866 Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-83876 Use after free in Windows Shell allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83869 Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network 9.8 Critical Oct 13, 2026
CVE-2026-83862 Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent… 8.8 High Oct 13, 2026
CVE-2026-83872 Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83864 Improper access control in Windows NTFS allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-83865 Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally 4.7 Medium Oct 13, 2026
CVE-2026-83836 Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code locally 7.8 High Oct 13, 2026
CVE-2026-83847 Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83838 Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate… 8.0 High Oct 13, 2026
CVE-2026-83848 Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-83834 Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-83842 Double free in Windows TCP/IP allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-83843 Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service… 7.5 High Oct 13, 2026
CVE-2026-83787 Insufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security… 5.5 Medium Oct 13, 2026
CVE-2026-83798 Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform… 5.5 Medium Oct 13, 2026
CVE-2026-83780 Use after free in Windows CCFFilter Driver allows an unauthorized attacker to execute code over a network 9.8 Critical Oct 13, 2026

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