Microsoft Windows 11 26h1 vulnerabilities
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Published CVEs affecting Microsoft Windows 11 26h1: 2516 record(s), with affected versions and fixes.cpe:2.3:o:microsoft:windows_11_26h1
CVE-2026-50420
Medium · 5.5
CWE-125 Jul 14, 2026
HTTP.sys Information Disclosure Vulnerability
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.
CVE-2026-50418
Medium · 6.1
CWE-284 Jul 14, 2026
Windows System Secure Feature Bypass Vulnerability
Improper access control in Windows System allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-50417
High · 7.8
CWE-20 Jul 14, 2026
Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
CVE-2026-50416
Low · 3.3
CWE-200 Jul 14, 2026
Win32k Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.
CVE-2026-50415
High · 7.5
CWE-200 Jul 14, 2026
Windows Media Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Media allows an unauthorized attacker to disclose information over a network.
CVE-2026-50414
High · 8.8
CWE-362 Jul 14, 2026
Windows Media Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
CVE-2026-50413
High · 7.8
CWE-416 Jul 14, 2026
Windows Runtime Elevation of Privilege Vulnerability
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50412
High · 7.8
CWE-121 Jul 14, 2026
Windows NTFS Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-50411
High · 7.5
CWE-121 Jul 14, 2026
Windows Active Directory Federation Services Denial of Service Vulnerability
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVE-2026-50410
High · 7.0
CWE-416 Jul 14, 2026
Windows Runtime Elevation of Privilege Vulnerability
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50409
Medium · 5.5
CWE-200 Jul 14, 2026
Windows Overlay Filter Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Overlay Filter allows an authorized attacker to disclose information locally.
CVE-2026-50407
High · 7.8
CWE-122 Jul 14, 2026
Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-50406
High · 7.8
CWE-416 Jul 14, 2026
Windows Backup Engine Elevation of Privilege Vulnerability
Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
CVE-2026-50405
High · 7.8
CWE-1220 Jul 14, 2026
Windows Filtering Platform Elevation of Privilege Vulnerability
Insufficient granularity of access control in Windows Filtering Platform (WFP) allows an authorized attacker to elevate privileges locally.
CVE-2026-50404
High · 7.0
CWE-362 Jul 14, 2026
Windows Media Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50403
High · 7.0
CWE-362 Jul 14, 2026
Windows Runtime Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50402
High · 7.8
CWE-126 Jul 14, 2026
NTFS Elevation of Privilege Vulnerability
Incorrect conversion between numeric types in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-50401
Medium · 5.5
CWE-125 Jul 14, 2026
Windows Cloud Files Mini Filter Driver Information Disclosure Vulnerability
Out-of-bounds read in Windows Cloud Files Mini Filter Driver allows an authorized attacker to disclose information locally.
CVE-2026-50400
High · 7.8
CWE-121 Jul 14, 2026
Windows App Package Installer Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows App Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-50399
High · 7.8
CWE-125 Jul 14, 2026
Windows Kernel Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50398
High · 7.5
CWE-362 Jul 14, 2026
Windows Media Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
CVE-2026-50397
High · 7.0
CWE-416 Jul 14, 2026
Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50396
High · 7.8
CWE-416 Jul 14, 2026
Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
CVE-2026-50394
Medium · 5.5
CWE-200 Jul 14, 2026
Windows Media Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Media allows an authorized attacker to disclose information locally.
CVE-2026-50393
High · 7.8
CWE-416 Jul 14, 2026
Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.