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Microsoft Windows 11 Version 26H1 vulnerabilities

2,571 known vulnerabilities affecting microsoft/windows_11_version_26h1.

Total CVEs
2,571
CISA KEV
10
actively exploited
Public exploits
6
Exploited in wild
13
Severity breakdown
CRITICAL93HIGH1902MEDIUM571LOW5

Vulnerabilities

Page 46 of 129
CVE-2026-45641P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-45641 [HIGH] CWE-843 CVE-2026-45641: Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthori Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.
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CVE-2026-49170P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-49170 [HIGH] CWE-285 CVE-2026-49170: Insufficient granularity of access control in Windows StateRepository API allows an authorized attac Insufficient granularity of access control in Windows StateRepository API allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-34333P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.21132026-05-12
CVE-2026-34333 [HIGH] CWE-190 CVE-2026-34333: Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
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CVE-2026-50688P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-50688 [HIGH] CWE-416 CVE-2026-50688: Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
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CVE-2026-50490P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-50490 [HIGH] CWE-416 CVE-2026-50490: Use after free in Windows Installer allows an authorized attacker to elevate privileges locally. Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
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CVE-2026-54129P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-54129 [HIGH] CWE-416 CVE-2026-54129: Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally. Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
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CVE-2026-50307P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-50307 [HIGH] CWE-416 CVE-2026-50307: Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally. Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-85322P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-85322 [HIGH] CWE-908 CVE-2026-85322: Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthor Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
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CVE-2026-71330P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-71330 [HIGH] CWE-497 CVE-2026-71330: Exposure of sensitive system information to an unauthorized control sphere in Windows Services for N Exposure of sensitive system information to an unauthorized control sphere in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to disclose information over a network.
nvd
CVE-2026-70587P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-70587 [HIGH] CWE-170 CVE-2026-70587: Improper null termination in Windows Remote Desktop Protocol allows an unauthorized attacker to disc Improper null termination in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a network.
nvd
CVE-2026-81355P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-81355 [HIGH] CWE-122 CVE-2026-81355: Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to execute code locally.
nvd
CVE-2026-48583P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-48583 [HIGH] CWE-416 CVE-2026-48583: Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-69864P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-69864 [HIGH] CWE-416 CVE-2026-69864: Use after free in Windows Hello allows an authorized attacker to elevate privileges locally. Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-26159P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-26159 [HIGH] CWE-306 CVE-2026-26159: Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an a Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-96245P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-96245 [HIGH] CWE-125 CVE-2026-96245: Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attack Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
nvd
CVE-2026-96246P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-96246 [HIGH] CWE-125 CVE-2026-96246: Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to disclose inform Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to disclose information over a network.
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CVE-2026-26176P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-26176 [HIGH] CWE-122 CVE-2026-26176: Heap-based buffer overflow in Windows Client Side Caching driver (csc.sys) allows an authorized atta Heap-based buffer overflow in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to elevate privileges locally.
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CVE-2026-61924P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-61924 [HIGH] CWE-125 CVE-2026-61924: Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
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CVE-2026-61918P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-61918 [HIGH] CWE-125 CVE-2026-61918: Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
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CVE-2026-50504P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-50504 [HIGH] CWE-126 CVE-2026-50504: Buffer over-read in Remote Desktop Client allows an unauthorized attacker to disclose information ov Buffer over-read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
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Microsoft Windows 11 Version 26H1 vulnerabilities | cvebase