Microsoft Windows 11 26H1 vulnerabilities

2,305 known vulnerabilities affecting microsoft/windows_11_26h1.

Total CVEs

2,305

CISA KEV

actively exploited

Public exploits

Exploited in wild

Severity breakdown

CRITICAL85HIGH1712MEDIUM504LOW4

Vulnerabilities

SortPage 48 of 116

CVE-2026-26163P3HIGHCVSS 7.8fixed in 10.0.28000.18362026-04-14

CVE-2026-26163 [HIGH] CWE-415 CVE-2026-26163: Double free in Windows Kernel allows an authorized attacker to elevate privileges locally. Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-85376P3HIGHCVSS 7.8fixed in 10.0.28000.32312026-10-13

CVE-2026-85376 [HIGH] CWE-1390 CVE-2026-85376: Weak authentication in Windows Print Spooler Components allows an authorized attacker to elevate pri Weak authentication in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50358P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50358 [HIGH] CWE-416 CVE-2026-50358: Use after free in Windows Media allows an authorized attacker to elevate privileges locally. Use after free in Windows Media allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50393P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50393 [HIGH] CWE-416 CVE-2026-50393: 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-2026-50476P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50476 [HIGH] CWE-416 CVE-2026-50476: Use after free in Microsoft Windows allows an authorized attacker to elevate privileges locally. Use after free in Microsoft Windows allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50396P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50396 [HIGH] CWE-416 CVE-2026-50396: 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-2026-57093P3HIGHCVSS 7.8fixed in 10.0.28000.22692026-07-14

CVE-2026-57093 [HIGH] CWE-416 CVE-2026-57093: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to ele Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-56187P3HIGHCVSS 7.8fixed in 10.0.28000.25252026-07-14

CVE-2026-56187 [HIGH] CWE-416 CVE-2026-56187: Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges lo Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50470P3HIGHCVSS 7.5fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50470 [HIGH] CWE-125 CVE-2026-50470: Out-of-bounds read in Windows Network Policy Server SNMP allows an unauthorized attacker to disclose Out-of-bounds read in Windows Network Policy Server SNMP allows an unauthorized attacker to disclose information over a network.

nvd

CVE-2026-88073P3HIGHCVSS 7.8fixed in 10.0.28000.32312026-10-13

CVE-2026-88073 [HIGH] CWE-416 CVE-2026-88073: Use after free in Windows Graphics Kernel allows an authorized attacker to elevate privileges locall Use after free in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-69392P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08

CVE-2026-69392 [HIGH] CWE-416 CVE-2026-69392: Use after free in Windows Shell allows an authorized attacker to elevate privileges locally. Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50305P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50305 [HIGH] CWE-362 CVE-2026-50305: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privilege Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50457P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50457 [HIGH] CWE-362 CVE-2026-50457: Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally. Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-54125P3HIGHCVSS 7.8fixed in 10.0.28000.25252026-07-14

CVE-2026-54125 [HIGH] CWE-362 CVE-2026-54125: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-50458P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14

CVE-2026-50458 [HIGH] CWE-362 CVE-2026-50458: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privilege Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-96317P3HIGHCVSS 7.8fixed in 10.0.28000.32312026-10-13

CVE-2026-96317 [HIGH] CWE-416 CVE-2026-96317: 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-2026-88080P3HIGHCVSS 7.8fixed in 10.0.28000.32312026-10-13

CVE-2026-88080 [HIGH] CWE-416 CVE-2026-88080: 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.

nvd

CVE-2026-85334P3HIGHCVSS 7.5fixed in 10.0.28000.32312026-10-13

CVE-2026-85334 [HIGH] CWE-125 CVE-2026-85334: Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to discl Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to disclose information over a network.

nvd

CVE-2026-26181P3HIGHCVSS 7.8fixed in 10.0.28000.18362026-04-14

CVE-2026-26181 [HIGH] CWE-362 CVE-2026-26181: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privilege Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-103558P3HIGHCVSS 7.5fixed in 10.0.28000.32312026-10-13

CVE-2026-103558 [HIGH] CWE-833 CVE-2026-103558: Deadlock in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny Deadlock in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.

nvd

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