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

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CVE Summary Score Published
CVE-2026-69644 Exposure of sensitive system information to an unauthorized control sphere in Windows iSCSI allows an authorized… 5.5 Medium Oct 13, 2026
CVE-2026-69883 Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network 9.8 Critical Oct 13, 2026
CVE-2026-69354 Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69634 Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a network 9.8 Critical Oct 13, 2026
CVE-2026-69705 Out-of-bounds write in Windows iSCSI allows an unauthorized attacker to execute code over a network 9.8 Critical Oct 13, 2026
CVE-2026-68836 Heap-based buffer overflow in Windows kernel32.dll allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69521 Integer overflow or wraparound in Windows iSCSI allows an unauthorized attacker to execute code over a network 8.8 High Oct 13, 2026
CVE-2026-70252 Use after free in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70278 Heap-based buffer overflow in Microsoft Windows Media Foundation allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-70271 Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70272 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70284 Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information… 5.5 Medium Oct 13, 2026
CVE-2026-70223 Use after free in Windows Console Driver allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70225 Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an… 7.8 High Oct 13, 2026
CVE-2026-70233 Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate… 7.8 High Oct 13, 2026
CVE-2026-70247 Out-of-bounds read in Windows HTTP.sys allows an authorized attacker to execute code locally 7.8 High Oct 13, 2026
CVE-2026-70168 Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges… 7.0 High Oct 13, 2026
CVE-2026-70150 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70195 Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information… 4.7 Medium Oct 13, 2026
CVE-2026-70173 Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-70156 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-70245 Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an… 7.8 High Oct 13, 2026
CVE-2026-70177 Numeric truncation error in Microsoft Windows Search Component allows an authorized attacker to elevate privileges… 7.8 High Oct 13, 2026
CVE-2026-70205 Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an… 7.0 High Oct 13, 2026
CVE-2026-70133 Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny… 7.5 High Oct 13, 2026

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