Known vulnerabilities in Microsoft Windows 11 Version 26H2
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-83864 | Improper access control in Windows NTFS allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83865 | Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally | 4.7 Medium | Oct 13, 2026 |
| CVE-2026-83875 | Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83836 | Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83846 | Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges… | 7.0 High | Oct 13, 2026 |
| CVE-2026-83847 | Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83838 | Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate… | 8.0 High | Oct 13, 2026 |
| CVE-2026-83848 | Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges… | 7.8 High | Oct 13, 2026 |
| CVE-2026-83839 | Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges… | 7.0 High | Oct 13, 2026 |
| CVE-2026-83849 | Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83834 | Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83842 | Double free in Windows TCP/IP allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83843 | Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service… | 7.5 High | Oct 13, 2026 |
| CVE-2026-83798 | Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform… | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83826 | Untrusted pointer dereference in Windows Error Reporting allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83827 | Heap-based buffer overflow in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83782 | Heap-based buffer overflow in Windows Shell allows an unauthorized attacker to execute code over a network | 9.8 Critical | Oct 13, 2026 |
| CVE-2026-83828 | Heap-based buffer overflow in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83793 | Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an… | 7.0 High | Oct 13, 2026 |
| CVE-2026-83784 | Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges over… | 8.8 High | Oct 13, 2026 |
| CVE-2026-83832 | Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83833 | Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83796 | Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83758 | Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to execute code locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83768 | Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
Other Microsoft products
Windows Server 2019 5745
Windows Server 2019 (Server Core installation) 5648
Windows 10 Version 1809 5349
Windows Server 2022 5112
Windows Server 2016 5051
Windows Server 2016 (Server Core installation) 4847
Windows 10 Version 21H2 4539
Windows 10 Version 1607 4535
Windows Server 2012 R2 4103
Windows 10 Version 22H2 4041
Windows Server 2012 R2 (Server Core installation) 3958
Windows Server 2012 3865