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Known vulnerabilities in Microsoft Windows 11 Version 25H2

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CVE Summary Score Published
CVE-2026-88152 Use after free in Windows Background Intelligent Transfer Service (BITS) allows an authorized attacker to elevate… 7.8 High Oct 13, 2026
CVE-2026-87702 Integer overflow or wraparound in Windows Resource Management (MRM) allows an authorized attacker to elevate… 7.8 High Oct 13, 2026
CVE-2026-88110 Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-87715 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-88079 Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-88113 Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-88134 Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-88103 Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-88072 Improper access control in Windows Host Guardian Service allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-88126 Untrusted pointer dereference in WebDAV allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-88105 Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-88127 Use after free in Windows SMB Server allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-87698 Out-of-bounds read in Windows Remote Access Service Infrastructure allows an authorized attacker to disclose information… 5.5 Medium Oct 13, 2026
CVE-2026-85943 Time-of-check time-of-use (toctou) race condition in Reliable Multicast Transport Driver (RMCAST) allows an authorized… 7.0 High Oct 13, 2026
CVE-2026-87699 Heap-based buffer overflow in Winlogon allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-87700 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-85884 Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized… 7.8 High Oct 13, 2026
CVE-2026-87704 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-87693 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-87705 Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to… 7.4 High Oct 13, 2026
CVE-2026-87694 Use after free in Windows Installer allows an authorized attacker to elevate privileges locally 7.8 High Oct 13, 2026
CVE-2026-85941 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer… 7.0 High Oct 13, 2026
CVE-2026-88076 Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges locally 7.0 High Oct 13, 2026
CVE-2026-87709 Improper access control in Windows Host Guardian Service allows an authorized attacker to perform tampering locally 5.5 Medium Oct 13, 2026
CVE-2026-69789 Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute… 7.5 High Oct 13, 2026

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