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Known vulnerabilities in Microsoft Windows Server 2022

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CVE Summary Score Published
CVE-2026-83887 Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-83856 Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network 7.5 High Oct 13, 2026
CVE-2026-83857 Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate… 7.8 High Oct 13, 2026
CVE-2026-83859 Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83850 Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-83860 Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network 7.5 High Oct 13, 2026
CVE-2026-83861 Heap-based buffer overflow in Windows Remote Desktop Protocol allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-83881 Heap-based buffer overflow in Windows exFAT File System allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83863 Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83883 Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83874 Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code over a network 8.8 High Oct 13, 2026
CVE-2026-83845 Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing… 8.4 High Oct 13, 2026
CVE-2026-83840 Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83841 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows… 7.0 High Oct 13, 2026
CVE-2026-83797 Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network 8.8 High Oct 13, 2026
CVE-2026-83835 Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-83837 Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83829 Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-83830 Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-83794 Out-of-bounds read in Windows Portable Device MTP Driver allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-83795 Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network 7.5 High Oct 13, 2026
CVE-2026-83777 Heap-based buffer overflow in Windows Bluetooth Service allows an unauthorized attacker to elevate privileges over an… 8.8 High Oct 13, 2026
CVE-2026-83788 Buffer over-read in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack 4.6 Medium Oct 13, 2026
CVE-2026-83789 Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network 8.8 High Oct 13, 2026
CVE-2026-83781 Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate… 7.8 High Oct 13, 2026

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