Microsoft Windows 11 version 26H1 vulnerabilities
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Published CVEs affecting Microsoft Windows 11 version 26H1: 2565 record(s), with affected versions and fixes.
CVE-2026-83776
Medium · 6.8
CWE-125 Oct 13, 2026
Windows Bluetooth Driver Elevation of Privilege Vulnerability
Out-of-bounds read in Microsoft Bluetooth Driver allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-83775
High · 7.0
CWE-122 Oct 13, 2026
Windows Installer Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-83774
Medium · 4.7
CWE-497 Oct 13, 2026
Windows Win32 Kernel Subsystem Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
CVE-2026-83773
Medium · 5.5
CWE-497 Oct 13, 2026
Windows MIDI Service Module Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows MIDI Service Module allows an authorized attacker to disclose information locally.
CVE-2026-83771
High · 8.8
CWE-416 Oct 13, 2026
Windows Camera Frame Server Monitor Elevation of Privilege Vulnerability
Use after free in Windows Camera Frame Server Monitor allows an unauthorized attacker to elevate privileges over an adjacent network.
CVE-2026-83770
Critical · 9.8
CWE-122 Oct 13, 2026
Windows Text Shaping Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.
CVE-2026-83769
High · 7.8
CWE-416 Oct 13, 2026
Microsoft OpenSSH for Windows Elevation of Privilege Vulnerability
Use after free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
CVE-2026-83768
High · 7.8
CWE-122 Oct 13, 2026
Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-83767
High · 7.8
CWE-121 Oct 13, 2026
Windows Installer Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-83766
Medium · 4.2
CWE-863 Oct 13, 2026
Windows Hyper-V Security Feature Bypass Vulnerability
Incorrect authorization in Windows Hyper-V allows an authorized attacker to bypass a security feature over an adjacent network.
CVE-2026-83765
Medium · 5.5
CWE-125 Oct 13, 2026
Windows DWM Core Library Information Disclosure Vulnerability
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
CVE-2026-83764
Medium · 5.5
CWE-863 Oct 13, 2026
Windows Clipboard User Service Information Disclosure Vulnerability
Incorrect authorization in Windows Clipboard User Service allows an authorized attacker to disclose information locally.
CVE-2026-83763
High · 7.8
CWE-843 Oct 13, 2026
Windows Input System Elevation of Privilege Vulnerability
Access of resource using incompatible type ('type confusion') in Windows Input System allows an authorized attacker to elevate privileges locally.
CVE-2026-83762
High · 7.8
CWE-416 Oct 13, 2026
Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-83761
High · 7.8
CWE-416 Oct 13, 2026
Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-83760
Medium · 5.5
CWE-125 Oct 13, 2026
Microsoft Bluetooth Driver Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Bluetooth Driver allows an authorized attacker to disclose information locally.
CVE-2026-83759
High · 8.8
CWE-94 Oct 13, 2026
Windows Encrypting File System (EFS) Remote Code Execution Vulnerability
Improper control of generation of code ('code injection') in Windows Encrypting File System (EFS) allows an authorized attacker to execute code over a network.
CVE-2026-83758
High · 7.8
CWE-122 Oct 13, 2026
Windows Error Reporting Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to execute code locally.
CVE-2026-83757
High · 7.8
CWE-122 Oct 13, 2026
Win32k Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-83756
High · 7.8
CWE-416 Oct 13, 2026
Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-83755
Medium · 5.5
CWE-908 Oct 13, 2026
Win32k Information Disclosure Vulnerability
Use of uninitialized resource in Windows Win32K allows an authorized attacker to disclose information locally.
CVE-2026-83754
High · 7.5
CWE-122 Oct 13, 2026
Microsoft OpenSSH for Windows Remote Code Execution Vulnerability
Heap-based buffer overflow in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
CVE-2026-83753
High · 7.8
CWE-122 Oct 13, 2026
Windows Camera Frame Server Monitor Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Camera Frame Server Monitor allows an authorized attacker to elevate privileges locally.
CVE-2026-83752
High · 7.0
CWE-416 Oct 13, 2026
Windows Installer Elevation of Privilege Vulnerability
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-83751
High · 7.0
CWE-416 Oct 13, 2026
Windows MIDI Service Module Elevation of Privileges Vulnerability
Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.