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Microsoft Windows 11 26H1 vulnerabilities

2,082 known vulnerabilities affecting microsoft/windows_11_26h1.

Total CVEs
2,082
CISA KEV
5
actively exploited
Public exploits
2
Exploited in wild
7
Severity breakdown
CRITICAL78HIGH1543MEDIUM457LOW4

Vulnerabilities

Page 36 of 105
CVE-2026-49167P3HIGHCVSS 7.8fixed in 10.0.28000.25252026-07-14
CVE-2026-49167 [HIGH] CWE-416 CVE-2026-49167: 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-2026-35417P3HIGHCVSS 7.8fixed in 10.0.28000.21132026-05-12
CVE-2026-35417 [HIGH] CWE-843 CVE-2026-35417: 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-2026-71345P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-71345 [HIGH] CWE-787 CVE-2026-71345: Out-of-bounds write in Windows Spaceport.sys allows an authorized attacker to execute code locally. Out-of-bounds write in Windows Spaceport.sys allows an authorized attacker to execute code locally.
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CVE-2026-62697P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-62697 [HIGH] CWE-416 CVE-2026-62697: Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges loc Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
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CVE-2026-56172P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-56172 [HIGH] CWE-416 CVE-2026-56172: Use after free in Windows VHD miniport driver allows an authorized attacker to elevate privileges lo Use after free in Windows VHD miniport driver allows an authorized attacker to elevate privileges locally.
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CVE-2026-69270P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-69270 [HIGH] CWE-20 CVE-2026-69270: Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized att Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
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CVE-2026-69307P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-69307 [HIGH] CWE-122 CVE-2026-69307: Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized att Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
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CVE-2026-69576P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-69576 [HIGH] CWE-416 CVE-2026-69576: Use after free in Graphic Fonts allows an authorized attacker to elevate privileges locally. Use after free in Graphic Fonts allows an authorized attacker to elevate privileges locally.
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CVE-2026-69571P3HIGHCVSS 7.8fixed in 10.0.28000.29542026-09-08
CVE-2026-69571 [HIGH] CWE-122 CVE-2026-69571: Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized att Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
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CVE-2026-65775P3HIGHCVSS 7.8fixed in 10.0.28000.27042026-08-11
CVE-2026-65775 [HIGH] CWE-416 CVE-2026-65775: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
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CVE-2026-62779P3HIGHCVSS 7.8fixed in 10.0.28000.27042026-08-11
CVE-2026-62779 [HIGH] CWE-416 CVE-2026-62779: Use after free in Windows Schannel allows an authorized attacker to elevate privileges locally. Use after free in Windows Schannel allows an authorized attacker to elevate privileges locally.
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CVE-2026-62707P3HIGHCVSS 7.8fixed in 10.0.28000.27042026-08-11
CVE-2026-62707 [HIGH] CWE-416 CVE-2026-62707: Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate pr Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.
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CVE-2026-62711P3HIGHCVSS 7.8fixed in 10.0.28000.27042026-08-11
CVE-2026-62711 [HIGH] CWE-416 CVE-2026-62711: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
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CVE-2026-50436P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14
CVE-2026-50436 [HIGH] CWE-416 CVE-2026-50436: 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-2026-54114P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14
CVE-2026-54114 [HIGH] CWE-416 CVE-2026-54114: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
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CVE-2026-50478P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14
CVE-2026-50478 [HIGH] CWE-416 CVE-2026-50478: 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-2026-50326P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14
CVE-2026-50326 [HIGH] CWE-416 CVE-2026-50326: Use after free in Windows Unified Consent System allows an authorized attacker to elevate privileges Use after free in Windows Unified Consent System allows an authorized attacker to elevate privileges locally.
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CVE-2026-50329P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14
CVE-2026-50329 [HIGH] CWE-416 CVE-2026-50329: 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-2026-58632P3HIGHCVSS 7.8fixed in 10.0.28000.22692026-07-14
CVE-2026-58632 [HIGH] CWE-416 CVE-2026-58632: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
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CVE-2026-50687P3HIGHCVSS 7.8fixed in 10.0.28000.2269fixed in 10.0.28000.25252026-07-14
CVE-2026-50687 [HIGH] CWE-416 CVE-2026-50687: 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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Microsoft Windows 11 26H1 vulnerabilities | cvebase