Microsoft Windows 11 Version 26h2 X64 Based Systems
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By the Year
In 2026 there have been 64 vulnerabilities in Microsoft Windows 11 Version 26h2 X64 Based Systems with an average score of 7.3 out of ten.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 64 | 7.29 |
It may take a day or so for new Windows 11 Version 26h2 X64 Based Systems vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Windows 11 Version 26h2 X64 Based Systems Security Vulnerabilities
Oct 2026: Servicing Stack Updates Elevation of Privilege Vulnerability
CVE-2026-96939
7 - High
- October 13, 2026
Time-of-check time-of-use (toctou) race condition in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
TOCTTOU
Oct 2026: Windows Modern Device Management (MDM) Information Disclosure Vulnerability
CVE-2026-96850
5.5 - Medium
- October 13, 2026
Use of uninitialized resource in Windows Modern Device Management (MDM) allows an authorized attacker to disclose information locally.
Use of Uninitialized Resource
Oct 2026: Desktop Window Manager Elevation of Privilege Vulnerability
CVE-2026-88093
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Microsoft Scripting Engine Elevation of Privilege Vulnerability
CVE-2026-88193
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Microsoft Scripting Engine allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows DWM Core Library Elevation of Privilege Vulnerability
CVE-2026-88179
7.8 - High
- October 13, 2026
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds Read
Oct 2026: Windows DWM Core Library Elevation of Privilege Vulnerability
CVE-2026-88128
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-87715
7 - High
- October 13, 2026
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Clipboard User Service Elevation of Privilege Vulnerability
CVE-2026-85912
7 - High
- October 13, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.
Race Condition
Oct 2026: Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-83913
7.8 - High
- October 13, 2026
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Direct Composition Elevation of Privilege Vulnerability
CVE-2026-85906
7.8 - High
- October 13, 2026
Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Hello Information Disclosure Vulnerability
CVE-2026-83907
5.5 - Medium
- October 13, 2026
Exposure of sensitive system information to an unauthorized control sphere in Windows Hello allows an authorized attacker to disclose information locally.
Exposure of Sensitive System Information to an Unauthorized Control Sphere
Oct 2026: Windows Direct Composition Elevation of Privilege Vulnerability
CVE-2026-85902
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Storage VSP Driver Elevation of Privilege Vulnerability
CVE-2026-85872
7.8 - High
- October 13, 2026
Use after free in Windows Storage VSP Driver allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Win32k Elevation of Privilege Vulnerability
CVE-2026-83762
7.8 - High
- October 13, 2026
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
CVE-2026-83573
6.8 - Medium
- October 13, 2026
Integer overflow or wraparound in Windows Kernel Mode Driver allows an unauthorized attacker to elevate privileges with a physical attack.
Integer Overflow or Wraparound
Oct 2026: Windows Error Reporting Remote Code Execution Vulnerability
CVE-2026-83519
9.8 - Critical
- October 13, 2026
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
Heap-based Buffer Overflow
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-69471
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
CVE-2026-96920
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Secure Kernel Mode Information Disclosure Vulnerability
CVE-2026-96865
5.6 - Medium
- October 13, 2026
Exposure of sensitive system information to an unauthorized control sphere in Windows Secure Kernel Mode allows an authorized attacker to disclose information locally.
Exposure of Sensitive System Information to an Unauthorized Control Sphere
Oct 2026: Windows iSCSI Denial of Service Vulnerability
CVE-2026-70031
7.5 - High
- October 13, 2026
Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service over a network.
Heap-based Buffer Overflow
Oct 2026: Windows iSCSI Remote Code Execution Vulnerability
CVE-2026-70013
8.1 - High
- October 13, 2026
Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.
Dangling pointer
Oct 2026: Windows Storage Spaces Controller Denial of Service Vulnerability
CVE-2026-87716
7.5 - High
- October 13, 2026
Heap-based buffer overflow in Windows Storage Spaces Controller allows an unauthorized attacker to deny service over a network.
Heap-based Buffer Overflow
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-88124
7 - High
- October 13, 2026
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Encrypting File System (EFS) Tampering Vulnerability
CVE-2026-88162
5.5 - Medium
- October 13, 2026
Improper authorization in Windows Encrypting File System (EFS) allows an authorized attacker to perform tampering locally.
AuthZ
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-87711
7.8 - High
- October 13, 2026
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Stack Overflow
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-87708
7 - High
- October 13, 2026
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-88080
7.8 - High
- October 13, 2026
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Clipboard User Service Elevation of Privilege Vulnerability
CVE-2026-85863
7.8 - High
- October 13, 2026
Use after free in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Clipboard User Service Elevation of Privilege Vulnerability
CVE-2026-85861
7.8 - High
- October 13, 2026
Use after free in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows DWM Core Library Elevation of Privilege Vulnerability
CVE-2026-85854
7 - High
- October 13, 2026
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows DWM Core Library Elevation of Privilege Vulnerability
CVE-2026-85853
7 - High
- October 13, 2026
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds Read
Oct 2026: Windows Biometric Service Information Disclosure Vulnerability
CVE-2026-85831
5.5 - Medium
- October 13, 2026
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to disclose information locally.
Heap-based Buffer Overflow
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-85358
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows USB Video Driver Elevation of Privilege Vulnerability
CVE-2026-85341
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Direct Composition Elevation of Privilege Vulnerability
CVE-2026-83922
7.8 - High
- October 13, 2026
Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Registry Elevation of Privilege Vulnerability
CVE-2026-83927
7.8 - High
- October 13, 2026
Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges locally.
insecure temporary file
Oct 2026: Internet Explorer Elevation of Privilege Vulnerability
CVE-2026-83741
7.8 - High
- October 13, 2026
Use after free in Internet Explorer allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Hyper-V Denial of Service Vulnerability
CVE-2026-70248
6.5 - Medium
- October 13, 2026
Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally.
NULL Pointer Dereference
Oct 2026: Windows Direct Composition Elevation of Privilege Vulnerability
CVE-2026-83896
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Direct Composition Elevation of Privilege Vulnerability
CVE-2026-70151
7.8 - High
- October 13, 2026
Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Microsoft Windows Search Component Elevation of Privilege Vulnerability
CVE-2026-70086
7 - High
- October 13, 2026
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Win32k Elevation of Privilege Vulnerability
CVE-2026-83866
7 - High
- October 13, 2026
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Internet (wininet.dll) Tampering Vulnerability
CVE-2026-83865
4.7 - Medium
- October 13, 2026
Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.
Relative Path Traversal
Oct 2026: Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
CVE-2026-83901
7 - High
- October 13, 2026
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows NTFS Information Disclosure Vulnerability
CVE-2026-83864
5.5 - Medium
- October 13, 2026
Improper access control in Windows NTFS allows an authorized attacker to disclose information locally.
Authentication Bypass by Spoofing
Oct 2026: Windows Hello Elevation of Privilege Vulnerability
CVE-2026-83853
7 - High
- October 13, 2026
Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Hello Information Disclosure Vulnerability
CVE-2026-83849
5.5 - Medium
- October 13, 2026
Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.
Out-of-bounds Read
Oct 2026: Windows Installer Elevation of Privilege Vulnerability
CVE-2026-83779
7.8 - High
- October 13, 2026
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Oct 2026: Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
CVE-2026-83761
7.8 - High
- October 13, 2026
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Dangling pointer
Oct 2026: Windows Error Reporting Remote Code Execution Vulnerability
CVE-2026-83748
9.8 - Critical
- October 13, 2026
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
Heap-based Buffer Overflow
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