Microsoft Windows 11 Version 26H2 vulnerabilities

CVE-2026-83896 [HIGH] CWE-122 CVE-2026-83896: Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate pr Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

CVE-2026-69633 [HIGH] CWE-122 CVE-2026-69633: Heap-based buffer overflow in Windows Update allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Update allows an authorized attacker to elevate privileges locally.

CVE-2026-83903 [HIGH] CWE-122 CVE-2026-83903: Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate pr Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

CVE-2026-83579 [HIGH] CWE-122 CVE-2026-83579: Heap-based buffer overflow in Windows Smart Card allows an authorized attacker to elevate privileges Heap-based buffer overflow in Windows Smart Card allows an authorized attacker to elevate privileges locally.

CVE-2026-70143 [HIGH] CWE-122 CVE-2026-70143: Heap-based buffer overflow in Windows Network File System allows an authorized attacker to execute c Heap-based buffer overflow in Windows Network File System allows an authorized attacker to execute code locally.

CVE-2026-70139 [HIGH] CWE-122 CVE-2026-70139: Heap-based buffer overflow in Windows Update Service allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows Update Service allows an authorized attacker to elevate privileges locally.

CVE-2026-85902 [HIGH] CWE-122 CVE-2026-85902: Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate pr Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

CVE-2026-70285 [HIGH] CWE-122 CVE-2026-70285: Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevat Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

CVE-2026-69898 [HIGH] CWE-122 CVE-2026-69898: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-70114 [HIGH] CWE-122 CVE-2026-70114: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-70121 [HIGH] CWE-122 CVE-2026-70121: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-69949 [HIGH] CWE-122 CVE-2026-69949: Heap-based buffer overflow in Windows Client for NFS allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows Client for NFS allows an authorized attacker to elevate privileges locally.

CVE-2026-68836 [HIGH] CWE-122 CVE-2026-68836: Heap-based buffer overflow in Windows kernel32.dll allows an authorized attacker to elevate privileg Heap-based buffer overflow in Windows kernel32.dll allows an authorized attacker to elevate privileges locally.

CVE-2026-70027 [HIGH] CWE-122 CVE-2026-70027: Heap-based buffer overflow in Windows Subsystem for Linux allows an authorized attacker to elevate p Heap-based buffer overflow in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.

CVE-2026-83882 [HIGH] CWE-122 CVE-2026-83882: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-85848 [HIGH] CWE-122 CVE-2026-85848: Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) allows an autho Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) allows an authorized attacker to elevate privileges locally.

CVE-2026-85832 [HIGH] CWE-122 CVE-2026-85832: Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) allows an autho Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) allows an authorized attacker to elevate privileges locally.

CVE-2026-96913 [HIGH] CWE-122 CVE-2026-96913: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-83753 [HIGH] CWE-122 CVE-2026-83753: Heap-based buffer overflow in Windows Camera Frame Server Monitor allows an authorized attacker to e Heap-based buffer overflow in Windows Camera Frame Server Monitor allows an authorized attacker to elevate privileges locally.

CVE-2026-83641 [HIGH] CWE-122 CVE-2026-83641: Heap-based buffer overflow in Windows Media allows an authorized attacker to elevate privileges loca Heap-based buffer overflow in Windows Media allows an authorized attacker to elevate privileges locally.