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Known vulnerabilities in Microsoft Windows 10 Version 21H2

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CVE Summary Score Published
CVE-2026-45599 Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network 8.1 High Jun 9, 2026
CVE-2026-45595 Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security… 5.4 Medium Jun 9, 2026
CVE-2026-45594 Exposure of sensitive information to an unauthorized actor in Windows Application Identity (AppID) Subsystem allows an… 5.5 Medium Jun 9, 2026
CVE-2026-45592 Integer overflow or wraparound in Windows Internet (wininet.dll) allows an authorized attacker to elevate privileges… 7.8 High Jun 9, 2026
CVE-2026-45593 Use after free in Windows SDK allows an authorized attacker to elevate privileges locally 7.8 High Jun 9, 2026
CVE-2026-45586 Improper link resolution before file access ('link following') in Windows Collaborative Translation Framework allows… 7.8 High Jun 9, 2026
CVE-2026-42828 Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges… 7.8 High Jun 9, 2026
CVE-2026-48583 Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally 7.8 High Jun 9, 2026
CVE-2026-48578 Improper access control in Windows Secure Boot allows an authorized attacker to elevate privileges locally 7.9 High Jun 9, 2026
CVE-2026-48575 Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally 7.9 High Jun 9, 2026
CVE-2026-48576 No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feature locally 7.9 High Jun 9, 2026
CVE-2026-48570 Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally 7.9 High Jun 9, 2026
CVE-2026-48573 No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feature locally 7.9 High Jun 9, 2026
CVE-2026-48568 Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally 7.9 High Jun 9, 2026
CVE-2026-48563 Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network 7.5 High Jun 9, 2026
CVE-2026-47648 Untrusted search path in Windows Storage allows an authorized attacker to elevate privileges locally 7.0 High Jun 9, 2026
CVE-2026-47653 Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network 8.8 High Jun 9, 2026
CVE-2026-45588 Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally 7.9 High Jun 9, 2026
CVE-2026-41092 Improper access control in Microsoft Kinect allows an authorized attacker to elevate privileges locally 7.8 High 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-2026-47289 Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network 8.8 High Jun 9, 2026
CVE-2026-45656 Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally 7.8 High Jun 9, 2026
CVE-2026-45655 Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a… 5.3 Medium Jun 9, 2026
CVE-2026-45642 Improper input validation in Microsoft Azure Attestation service and Device Health Attestation Service allows an… 3.9 Low Jun 9, 2026
CVE-2026-45634 Out-of-bounds read in Windows DHCP Server allows an authorized attacker to disclose information locally 5.5 Medium Jun 9, 2026

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