Microsoft Windows 10 21H2 vulnerabilities

3,565 known vulnerabilities affecting microsoft/windows_10_21h2.

Total CVEs

3,565

CISA KEV

actively exploited

Public exploits

Exploited in wild

102

Severity breakdown

CRITICAL117HIGH2569MEDIUM870LOW9

Vulnerabilities

SortPage 59 of 179

CVE-2025-64679P3HIGHCVSS 7.8fixed in 10.0.19044.64562025-12-09

CVE-2025-64679 [HIGH] CWE-122 CVE-2025-64679: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-48574P3HIGHCVSS 7.8fixed in 10.0.19044.74172026-06-09

CVE-2026-48574 [HIGH] CWE-122 CVE-2026-48574: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally. Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.

nvd

CVE-2026-73027P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-73027 [HIGH] CWE-15 CVE-2026-73027: External control of system or configuration setting in Windows Setup Files Cleanup allows an authori External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-70151P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-70151 [HIGH] CWE-416 CVE-2026-70151: Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges loc Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-49791P3HIGHCVSS 7.8fixed in 10.0.19044.75482026-07-14

CVE-2026-49791 [HIGH] CWE-59 CVE-2026-49791: Improper link resolution before file access ('link following') in Windows Routing and Remote Access Improper link resolution before file access ('link following') in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-83876P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-83876 [HIGH] CWE-416 CVE-2026-83876: 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-2026-70023P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-70023 [HIGH] CWE-416 CVE-2026-70023: 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.

nvd

CVE-2026-83883P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-83883 [HIGH] CWE-416 CVE-2026-83883: 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.

nvd

CVE-2026-85945P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-85945 [HIGH] CWE-416 CVE-2026-85945: 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-2026-88134P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-88134 [HIGH] CWE-416 CVE-2026-88134: 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-2026-87694P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-87694 [HIGH] CWE-416 CVE-2026-87694: 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-2026-83859P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-83859 [HIGH] CWE-416 CVE-2026-83859: Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally. Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-49167P3HIGHCVSS 7.8fixed in 10.0.19044.75482026-07-14

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.

nvd

CVE-2026-85906P3HIGHCVSS 7.8fixed in 10.0.19044.78072026-10-13

CVE-2026-85906 [HIGH] CWE-416 CVE-2026-85906: Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges loc Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

nvd

CVE-2026-35417P3HIGHCVSS 7.8fixed in 10.0.19044.72912026-05-12

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.

nvd

CVE-2026-71345P3HIGHCVSS 7.8fixed in 10.0.19044.77252026-09-08

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.

nvd

CVE-2026-62697P3HIGHCVSS 7.8fixed in 10.0.19044.77252026-09-08

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.

nvd

CVE-2026-56172P3HIGHCVSS 7.8fixed in 10.0.19044.77252026-09-08

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.

nvd

CVE-2026-69270P3HIGHCVSS 7.8fixed in 10.0.19044.77252026-09-08

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.

nvd

CVE-2026-69307P3HIGHCVSS 7.8fixed in 10.0.19044.77252026-09-08

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.

nvd

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