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Known vulnerabilities in Microsoft Windows 11 Version 23H2

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CVE Summary Score Published
CVE-2026-69979 Improper protection of alternate path in Windows AppX Deployment Service allows an authorized attacker to bypass a… 5.5 Medium Oct 13, 2026
CVE-2026-69968 Relative path traversal in Windows Libarchive allows an unauthorized attacker to perform tampering over a network 6.5 Medium Oct 13, 2026
CVE-2026-70010 Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69954 Buffer over-read in Windows Overlay Filter allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-69957 Integer overflow or wraparound in Windows Overlay Filter allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69942 Buffer over-read in Windows Overlay Filter allows an authorized attacker to execute code locally 7.8 High Oct 13, 2026
CVE-2026-69918 Heap-based buffer overflow in Windows Core Messaging allows an authorized attacker to elevate privileges locally 8.8 High Oct 13, 2026
CVE-2026-69958 Heap-based buffer overflow in Windows Overlay Filter allows an unauthorized attacker to execute code with a physical… 6.8 Medium Oct 13, 2026
CVE-2026-69945 Missing authorization in Windows AppX Deployment Extensions allows an authorized attacker to elevate privileges locally 8.8 High Oct 13, 2026
CVE-2026-69959 Out-of-bounds read in Windows Overlay Filter allows an authorized attacker to execute code locally 7.8 High Oct 13, 2026
CVE-2026-69947 Heap-based buffer overflow in Windows Overlay Filter allows an unauthorized attacker to execute code with a physical… 6.8 Medium Oct 13, 2026
CVE-2026-69963 Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69950 Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69952 Out-of-bounds read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69967 Out-of-bounds read in Windows Overlay Filter allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-69953 Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69795 Null pointer dereference in Windows Clipboard Server allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-69914 Out-of-bounds read in Windows AppX Deployment Service allows an authorized attacker to disclose information locally 5.5 Medium Oct 13, 2026
CVE-2026-69763 Use after free in Windows Storage allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-69935 Use after free in Windows Storage allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-69766 Use after free in Windows Storage allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-69840 Use after free in Windows Certificates allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-69850 Untrusted pointer dereference in Windows Certificates allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-69905 Missing authorization in Windows AppX Deployment Service allows an authorized attacker to perform tampering locally 5.5 Medium Oct 13, 2026
CVE-2026-69867 Out-of-bounds read in SQLite allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026

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