Known vulnerabilities in Microsoft Windows 11 Version 26H2
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-70275 | Untrusted pointer dereference in Windows CD-ROM Driver allows an unauthorized attacker to execute code over a network | 8.8 High | Oct 13, 2026 |
| CVE-2026-70241 | Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-70286 | Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83569 | Heap-based buffer overflow in HID Parser Library allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83909 | Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an… | 4.7 Medium | Oct 13, 2026 |
| CVE-2026-70086 | Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83867 | Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83868 | Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth… | 7.0 High | Oct 13, 2026 |
| CVE-2026-83879 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Overlay Filter… | 7.0 High | Oct 13, 2026 |
| CVE-2026-83901 | Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83892 | Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83902 | Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83893 | Exposure of sensitive system information to an unauthorized control sphere in Windows Clipboard User Service allows an… | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83882 | Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83896 | Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83885 | Inadequate encryption strength in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to… | 5.6 Medium | Oct 13, 2026 |
| CVE-2026-83855 | Integer underflow (wrap or wraparound) in Windows WLAN Service allows an unauthorized attacker to deny service over a… | 7.5 High | Oct 13, 2026 |
| CVE-2026-83866 | Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83876 | Use after free in Windows Shell allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83851 | Heap-based buffer overflow in Windows Partition Management Driver allows an unauthorized attacker to elevate… | 8.8 High | Oct 13, 2026 |
| CVE-2026-83869 | Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network | 9.8 Critical | Oct 13, 2026 |
| CVE-2026-83852 | Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83853 | Use after free in Windows Hello allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83854 | Improper access control in Windows Notification allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83872 | Incorrect conversion between numeric types in Windows TCP/IP 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