Microsoft Windows 11 Version 26H1 vulnerabilities

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-2026-58542 [HIGH] CWE-122 CVE-2026-58542: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code 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.

CVE-2026-83698 [HIGH] CWE-122 CVE-2026-83698: Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacke Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.

CVE-2026-87699 [HIGH] CWE-122 CVE-2026-87699: Heap-based buffer overflow in Winlogon allows an authorized attacker to elevate privileges locally. Heap-based buffer overflow in Winlogon allows an authorized attacker to elevate privileges locally.

CVE-2026-83783 [HIGH] CWE-122 CVE-2026-83783: Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to el Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

CVE-2026-83640 [HIGH] CWE-122 CVE-2026-83640: Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

CVE-2026-83650 [HIGH] CWE-122 CVE-2026-83650: 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.

CVE-2026-83829 [HIGH] CWE-122 CVE-2026-83829: Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to el Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-83639 [HIGH] CWE-122 CVE-2026-83639: Heap-based buffer overflow in Windows Sensor Data Service allows an authorized attacker to elevate p Heap-based buffer overflow in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83863 [HIGH] CWE-122 CVE-2026-83863: Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privi Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.