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 38 of 129
CVE-2026-61365P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-61365 [HIGH] CWE-306 CVE-2026-61365: Missing authentication for critical function in Windows Remote Desktop Services allows an authorized
Missing authentication for critical function in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-61356P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-61356 [HIGH] CWE-306 CVE-2026-61356: Missing authentication for critical function in Windows Remote Desktop Services allows an authorized
Missing authentication for critical function in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-61364P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-61364 [HIGH] CWE-306 CVE-2026-61364: Missing authentication for critical function in Windows Remote Desktop Services allows an authorized
Missing authentication for critical function in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-42976P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-42976 [HIGH] CWE-306 CVE-2026-42976: Missing authentication for critical function in Windows RPC API allows an authorized attacker to ele
Missing authentication for critical function in Windows RPC API allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-61367P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-61367 [HIGH] CWE-306 CVE-2026-61367: Missing authentication for critical function in Windows Remote Desktop Services allows an authorized
Missing authentication for critical function in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-62777P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.27042026-08-11
CVE-2026-62777 [HIGH] CWE-306 CVE-2026-62777: Missing authentication for critical function in Windows License Manager allows an authorized attacke
Missing authentication for critical function in Windows License Manager allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-45638P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-45638 [HIGH] CWE-122 CVE-2026-45638: Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized att
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-87707P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.29542026-10-13
CVE-2026-87707 [HIGH] CWE-122 CVE-2026-87707: Heap-based buffer overflow in Windows Fax and Scan Service allows an authorized attacker to elevate
Heap-based buffer overflow in Windows Fax and Scan Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40406P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.21132026-05-12
CVE-2026-40406 [HIGH] CWE-416 CVE-2026-40406: Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a netw
Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.
nvd
CVE-2026-48563P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-48563 [HIGH] CWE-416 CVE-2026-48563: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
nvd
CVE-2026-56648P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-56648 [HIGH] CWE-367 CVE-2026-56648: Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorize
Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorized attacker to elevate privileges over a network.
nvd
CVE-2026-42913P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-42913 [HIGH] CWE-362 CVE-2026-42913: Concurrent execution using shared resource with improper synchronization ('race condition') in Remot
Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
nvd
CVE-2026-42909P3HIGHCVSS 7.5≥ 10.0.28000.0, < 10.0.28000.22692026-06-09
CVE-2026-42909 [HIGH] CWE-362 CVE-2026-42909: Concurrent execution using shared resource with improper synchronization ('race condition') in Remot
Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
nvd
CVE-2026-70149P3HIGHCVSS 8.8≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-70149 [HIGH] CWE-122 CVE-2026-70149: Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (cs
Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.
nvd
CVE-2026-50342P3HIGHCVSS 8.8≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-50342 [HIGH] CWE-284 CVE-2026-50342: Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate priv
Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-96186P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.32312026-10-13
CVE-2026-96186 [HIGH] CWE-502 CVE-2026-96186: Deserialization of untrusted data in Microsoft Windows Media Foundation allows an authorized attacke
Deserialization of untrusted data in Microsoft Windows Media Foundation allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-54128P3HIGHCVSS 8.4≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-54128 [HIGH] CWE-416 CVE-2026-54128: Use after free in Windows DHCP Client allows an unauthorized attacker to execute code locally.
Use after free in Windows DHCP Client allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-54127P3HIGHCVSS 8.4≥ 10.0.28000.0, < 10.0.28000.25252026-07-14
CVE-2026-54127 [HIGH] CWE-416 CVE-2026-54127: Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
nvd
CVE-2026-27909P3HIGHCVSS 7.8≥ 10.0.28000.0, < 10.0.28000.18362026-04-14
CVE-2026-27909 [HIGH] CWE-416 CVE-2026-27909: Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privil
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-81354P3HIGHCVSS 8.2≥ 10.0.28000.0, < 10.0.28000.29542026-09-08
CVE-2026-81354 [HIGH] CWE-122 CVE-2026-81354: Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges loca
Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.
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