Microsoft Windows 11 26H1 vulnerabilities

CVE-2026-62736 [HIGH] CWE-122 CVE-2026-62736: Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privilege Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileges locally.

CVE-2026-62717 [HIGH] CWE-122 CVE-2026-62717: Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privi Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.

CVE-2026-62722 [HIGH] CWE-122 CVE-2026-62722: Heap-based buffer overflow in Windows Brokering File System allows an authorized attacker to elevate Heap-based buffer overflow in Windows Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-62735 [HIGH] CWE-122 CVE-2026-62735: Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges l Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

CVE-2026-62890 [HIGH] CWE-122 CVE-2026-62890: Heap-based buffer overflow in Windows GDI+ allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows GDI+ allows an authorized attacker to execute code locally.

CVE-2026-58601 [HIGH] CWE-122 CVE-2026-58601: Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-50309 [HIGH] CWE-122 CVE-2026-50309: 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-2026-50407 [HIGH] CWE-122 CVE-2026-50407: 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-2026-50679 [HIGH] CWE-122 CVE-2026-50679: 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-2026-54987 [HIGH] CWE-122 CVE-2026-54987: Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.

CVE-2026-50494 [HIGH] CWE-122 CVE-2026-50494: 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-2026-50499 [HIGH] CWE-122 CVE-2026-50499: Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elev Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

CVE-2026-50417 [HIGH] CWE-20 CVE-2026-50417: 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-2026-50336 [HIGH] CWE-122 CVE-2026-50336: 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-2026-50327 [HIGH] CWE-122 CVE-2026-50327: Heap-based buffer overflow in Windows Media allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows Media allows an authorized attacker to execute code locally.

CVE-2026-85800 [HIGH] CWE-122 CVE-2026-85800: Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privi Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-85822 [HIGH] CWE-122 CVE-2026-85822: 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-2026-85327 [HIGH] CWE-122 CVE-2026-85327: Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elev Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

CVE-2026-85915 [HIGH] CWE-122 CVE-2026-85915: Heap-based buffer overflow in Windows PCI Bus Driver allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows PCI Bus Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-96920 [HIGH] CWE-122 CVE-2026-96920: Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized a Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.