Microsoft Windows 11 26H2 vulnerabilities

CVE-2026-69958 [MEDIUM] CWE-122 CVE-2026-69958: Heap-based buffer overflow in Windows Overlay Filter allows an unauthorized attacker to execute code Heap-based buffer overflow in Windows Overlay Filter allows an unauthorized attacker to execute code with a physical attack.

CVE-2026-70170 [MEDIUM] CWE-822 CVE-2026-70170: Untrusted pointer dereference in Windows Kernel allows an authorized attacker to deny service over a Untrusted pointer dereference in Windows Kernel allows an authorized attacker to deny service over a network.

CVE-2026-102206 [MEDIUM] CWE-122 CVE-2026-102206: Heap-based buffer overflow in Windows Portable Device MTP Driver allows an unauthorized attacker to Heap-based buffer overflow in Windows Portable Device MTP Driver allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-69387 [HIGH] CWE-416 CVE-2026-69387: Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locall Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-88079 [HIGH] CWE-476 CVE-2026-88079: Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate pri Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

CVE-2026-97812 [HIGH] CWE-415 CVE-2026-97812: Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileg Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.

CVE-2026-96319 [HIGH] CWE-416 CVE-2026-96319: Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges local Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-83899 [HIGH] CWE-362 CVE-2026-83899: Improper privilege management in Windows Installer allows an authorized attacker to elevate privileg Improper privilege management in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-96939 [HIGH] CWE-367 CVE-2026-96939: Time-of-check time-of-use (toctou) race condition in Servicing Stack Updates allows an authorized at Time-of-check time-of-use (toctou) race condition in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.

CVE-2026-85328 [HIGH] CWE-1390 CVE-2026-85328: Weak authentication in Windows Projected File System allows an authorized attacker to elevate privil Weak authentication in Windows Projected File System allows an authorized attacker to elevate privileges locally.

CVE-2026-96949 [HIGH] CWE-362 CVE-2026-96949: Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attac Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-97787 [HIGH] CWE-362 CVE-2026-97787: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-96932 [HIGH] CWE-362 CVE-2026-96932: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally.

CVE-2026-108396 [HIGH] CWE-367 CVE-2026-108396: Time-of-check time-of-use (toctou) race condition in Windows Modern Device Management (MDM) allows a Time-of-check time-of-use (toctou) race condition in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

CVE-2026-85914 [HIGH] CWE-416 CVE-2026-85914: Use after free in Windows Embedded Mode Service allows an authorized attacker to elevate privileges Use after free in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally.

CVE-2026-85329 [HIGH] CWE-362 CVE-2026-85329: Concurrent execution using shared resource with improper synchronization ('race condition') in Micro Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Account allows an authorized attacker to elevate privileges locally.

CVE-2026-96919 [HIGH] CWE-362 CVE-2026-96919: Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privil Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

CVE-2026-85825 [HIGH] CWE-362 CVE-2026-85825: Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attac Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-84018 [HIGH] CWE-367 CVE-2026-84018: Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileg Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

CVE-2026-88096 [HIGH] CWE-362 CVE-2026-88096: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DCOM Server allows an authorized attacker to elevate privileges locally.