Microsoft Windows 11 Version 26H2 vulnerabilities

CVE-2026-70004 [HIGH] CWE-416 CVE-2026-70004: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-69996 [HIGH] CWE-416 CVE-2026-69996: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-70012 [HIGH] CWE-416 CVE-2026-70012: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-69997 [HIGH] CWE-416 CVE-2026-69997: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-97789 [HIGH] CWE-416 CVE-2026-97789: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-83728 [HIGH] CWE-1286 CVE-2026-83728: Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized attack Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized attacker to perform spoofing locally.

CVE-2026-88121 [HIGH] CWE-416 CVE-2026-88121: Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized atta Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.

CVE-2026-85359 [HIGH] CWE-94 CVE-2026-85359: Improper control of generation of code ('code injection') in Windows Performance Monitor allows an a Improper control of generation of code ('code injection') in Windows Performance Monitor allows an authorized attacker to elevate privileges locally.

CVE-2026-70031 [HIGH] CWE-122 CVE-2026-70031: Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service over a n Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service over a network.

CVE-2026-83860 [HIGH] CWE-121 CVE-2026-83860: Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a ne Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.

CVE-2026-70233 [HIGH] CWE-122 CVE-2026-70233: Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-83830 [HIGH] CWE-122 CVE-2026-83830: Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to ele Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-70132 [HIGH] CWE-122 CVE-2026-70132: Heap-based buffer overflow in Windows Portable Device File System Driver allows an authorized attack Heap-based buffer overflow in Windows Portable Device File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-83514 [HIGH] CWE-122 CVE-2026-83514: Heap-based buffer overflow in Windows Partition Management Driver allows an authorized attacker to e Heap-based buffer overflow in Windows Partition Management Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-70048 [HIGH] CWE-122 CVE-2026-70048: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-70112 [HIGH] CWE-122 CVE-2026-70112: Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code lo Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code locally.

CVE-2026-83881 [HIGH] CWE-122 CVE-2026-83881: Heap-based buffer overflow in Windows exFAT File System allows an authorized attacker to elevate pri Heap-based buffer overflow in Windows exFAT File System allows an authorized attacker to elevate privileges locally.

CVE-2026-70093 [HIGH] CWE-122 CVE-2026-70093: Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevat Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevate privileges locally.

CVE-2026-83569 [HIGH] CWE-122 CVE-2026-83569: Heap-based buffer overflow in HID Parser Library allows an authorized attacker to elevate privileges Heap-based buffer overflow in HID Parser Library allows an authorized attacker to elevate privileges locally.

CVE-2026-78459 [HIGH] CWE-122 CVE-2026-78459: Heap-based buffer overflow in Windows Internet Information Services allows an authorized attacker to Heap-based buffer overflow in Windows Internet Information Services allows an authorized attacker to elevate privileges locally.