Microsoft Windows 11 Version 23H2 vulnerabilities
1,561 known vulnerabilities affecting microsoft/windows_11_version_23h2.
Total CVEs
1,561
CISA KEV
59
actively exploited
Public exploits
29
Exploited in wild
30
Severity breakdown
CRITICAL20HIGH1096MEDIUM438LOW7
Vulnerabilities
Page 2 of 79
CVE-2026-33838HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-33838 [HIGH] CWE-415 CVE-2026-33838: Double free in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
Double free in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-34345HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-34345 [HIGH] CWE-362 CVE-2026-34345: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver f
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-33835HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-33835 [HIGH] CWE-416 CVE-2026-33835: Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate pr
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40408HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-40408 [HIGH] CWE-416 CVE-2026-40408: Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges lo
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-33834HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-33834 [HIGH] CWE-284 CVE-2026-33834: Improper access control in Windows Event Logging Service allows an authorized attacker to elevate pr
Improper access control in Windows Event Logging Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40406HIGHCVSS 7.5≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
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-2026-33839HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-33839 [HIGH] CWE-362 CVE-2026-33839: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-33841HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-33841 [HIGH] CWE-122 CVE-2026-33841: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40382HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-40382 [HIGH] CWE-416 CVE-2026-40382: Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges loca
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-35416HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-35416 [HIGH] CWE-416 CVE-2026-35416: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver f
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40399HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-40399 [HIGH] CWE-121 CVE-2026-40399: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-35418HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-35418 [HIGH] CWE-367 CVE-2026-35418: Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate pr
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-34340HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-34340 [HIGH] CWE-416 CVE-2026-34340: Use after free in Windows Projected File System allows an authorized attacker to elevate privileges
Use after free in Windows Projected File System allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-40397HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-40397 [HIGH] CWE-191 CVE-2026-40397: Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to
Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-35421HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-35421 [HIGH] CWE-122 CVE-2026-35421: Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-40414HIGHCVSS 7.4≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-40414 [HIGH] CWE-476 CVE-2026-40414: Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an a
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an adjacent network.
nvd
CVE-2026-34342HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-34342 [HIGH] CWE-362 CVE-2026-34342: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-34331HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-34331 [HIGH] CWE-362 CVE-2026-34331: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-34344HIGHCVSS 7.8≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-34344 [HIGH] CWE-843 CVE-2026-34344: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver f
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-34334HIGHCVSS 7.0≥ 10.0.22631.0, < 10.0.22631.70792026-05-12
CVE-2026-34334 [HIGH] CWE-362 CVE-2026-34334: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
nvd