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Known vulnerabilities in Microsoft Windows Server 2012 R2 (Server Core installation)

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CVE Summary Score Published
CVE-2026-83588 Heap-based buffer overflow in Windows USB Driver allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83582 Use after free in Windows Graphics Kernel allows an authorized attacker to disclose information locally 4.7 Medium Oct 13, 2026
CVE-2026-83570 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83513 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-2026-83522 Reliance on untrusted inputs in a security decision in Windows IKE Extension allows an unauthorized attacker to… 8.1 High Oct 13, 2026
CVE-2026-83514 Heap-based buffer overflow in Windows Partition Management Driver allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-83564 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-83517 Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over… 9.8 Critical Oct 13, 2026
CVE-2026-83519 Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network 9.8 Critical Oct 13, 2026
CVE-2026-83511 Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform… 7.4 High Oct 13, 2026
CVE-2026-83506 Untrusted search path in Servicing Stack Updates allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83508 Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-83509 Untrusted search path in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-69635 Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges with a physical… 6.6 Medium Oct 13, 2026
CVE-2026-69471 Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69326 Heap-based buffer overflow in Graphic Fonts allows an unauthorized attacker to execute code over a network 8.8 High Oct 13, 2026
CVE-2026-81971 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an… 7.0 High Oct 13, 2026
CVE-2026-73027 External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to… 7.8 High Oct 13, 2026
CVE-2026-77496 Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network 8.8 High Oct 13, 2026
CVE-2026-78459 Heap-based buffer overflow in Windows Internet Information Services allows an authorized attacker to elevate… 7.8 High Oct 13, 2026
CVE-2026-69640 Incorrect authorization in Windows Key Distribution Center allows an authorized attacker to bypass a security feature… 5.3 Medium Oct 13, 2026
CVE-2026-69736 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Credential… 7.0 High Oct 13, 2026
CVE-2026-70292 Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-70293 Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information… 5.5 Medium Oct 13, 2026
CVE-2026-70294 Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026

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