Microsoft Windows 10 21H2 vulnerabilities
3,745 known vulnerabilities affecting microsoft/windows_10_21h2.
Total CVEs
3,745
CISA KEV
91
actively exploited
Public exploits
55
Exploited in wild
102
Severity breakdown
CRITICAL123HIGH2691MEDIUM922LOW9
Vulnerabilities
Page 162 of 188
CVE-2026-83713P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-83713 [MEDIUM] CWE-497 CVE-2026-83713: Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an authorized a
Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to disclose information locally.
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CVE-2026-70199P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-70199 [MEDIUM] CWE-497 CVE-2026-70199: Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows
Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.
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CVE-2026-108462P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-108462 [MEDIUM] CWE-497 CVE-2026-108462: Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows
Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.
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CVE-2026-25180P4MEDIUMCVSS 5.5fixed in 10.0.19044.70582026-03-10
CVE-2026-25180 [MEDIUM] CWE-125 CVE-2026-25180: Out-of-bounds read in Microsoft Graphics Component allows an unauthorized attacker to disclose infor
Out-of-bounds read in Microsoft Graphics Component allows an unauthorized attacker to disclose information locally.
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CVE-2026-20827P4MEDIUMCVSS 5.5fixed in 10.0.19044.68092026-01-13
CVE-2026-20827 [MEDIUM] CWE-200 CVE-2026-20827: Exposure of sensitive information to an unauthorized actor in Tablet Windows User Interface (TWINUI)
Exposure of sensitive information to an unauthorized actor in Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attacker to disclose information locally.
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CVE-2026-25186P4MEDIUMCVSS 5.5fixed in 10.0.19044.70582026-03-10
CVE-2026-25186 [MEDIUM] CWE-200 CVE-2026-25186: Exposure of sensitive information to an unauthorized actor in Windows Accessibility Infrastructure (
Exposure of sensitive information to an unauthorized actor in Windows Accessibility Infrastructure (ATBroker.exe) allows an authorized attacker to disclose information locally.
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CVE-2025-47160P4MEDIUMCVSS 5.4fixed in 10.0.19044.59652025-06-10
CVE-2025-47160 [MEDIUM] CWE-693 CVE-2025-47160: Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security f
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
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CVE-2026-83893P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-83893 [MEDIUM] CWE-497 CVE-2026-83893: Exposure of sensitive system information to an unauthorized control sphere in Windows Clipboard User
Exposure of sensitive system information to an unauthorized control sphere in Windows Clipboard User Service allows an authorized attacker to disclose information locally.
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CVE-2026-96948P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-96948 [MEDIUM] CWE-497 CVE-2026-96948: 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.
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CVE-2026-69315P4MEDIUMCVSS 5.5fixed in 10.0.19044.77252026-09-08
CVE-2026-69315 [MEDIUM] CWE-497 CVE-2026-69315: Exposure of sensitive system information to an unauthorized control sphere in Windows License Manage
Exposure of sensitive system information to an unauthorized control sphere in Windows License Manager allows an authorized attacker to disclose information locally.
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CVE-2026-69862P4MEDIUMCVSS 5.5fixed in 10.0.19044.77252026-09-08
CVE-2026-69862 [MEDIUM] CWE-125 CVE-2026-69862: Out-of-bounds read in Windows Wireless Wide Area Network Service allows an authorized attacker to di
Out-of-bounds read in Windows Wireless Wide Area Network Service allows an authorized attacker to disclose information locally.
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CVE-2026-73008P4MEDIUMCVSS 5.5fixed in 10.0.19044.77252026-09-08
CVE-2026-73008 [MEDIUM] CWE-359 CVE-2026-73008: Exposure of private personal information to an unauthorized actor in Windows Biometric Service allow
Exposure of private personal information to an unauthorized actor in Windows Biometric Service allows an authorized attacker to disclose information locally.
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CVE-2026-20839P4MEDIUMCVSS 5.5fixed in 10.0.19044.68092026-01-13
CVE-2026-20839 [MEDIUM] CWE-284 CVE-2026-20839: Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker t
Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose information locally.
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CVE-2026-70017P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-70017 [MEDIUM] CWE-843 CVE-2026-70017: Access of resource using incompatible type ('type confusion') in Windows Secure Kernel Mode allows a
Access of resource using incompatible type ('type confusion') in Windows Secure Kernel Mode allows an authorized attacker to disclose information locally.
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CVE-2026-70090P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-70090 [MEDIUM] CWE-908 CVE-2026-70090: Use of uninitialized resource in Windows Netlogon allows an authorized attacker to disclose informat
Use of uninitialized resource in Windows Netlogon allows an authorized attacker to disclose information locally.
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CVE-2026-83755P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-83755 [MEDIUM] CWE-908 CVE-2026-83755: Use of uninitialized resource in Windows Win32K allows an authorized attacker to disclose informatio
Use of uninitialized resource in Windows Win32K allows an authorized attacker to disclose information locally.
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CVE-2026-70284P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-70284 [MEDIUM] CWE-908 CVE-2026-70284: Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to dis
Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
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CVE-2026-70293P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-70293 [MEDIUM] CWE-908 CVE-2026-70293: Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to dis
Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
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CVE-2026-102187P4MEDIUMCVSS 5.5fixed in 10.0.19044.78072026-10-13
CVE-2026-102187 [MEDIUM] CWE-908 CVE-2026-102187: Use of uninitialized resource in Windows Kernel allows an authorized attacker to disclose informatio
Use of uninitialized resource in Windows Kernel allows an authorized attacker to disclose information locally.
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CVE-2026-49180P4MEDIUMCVSS 5.5fixed in 10.0.19044.75482026-07-14
CVE-2026-49180 [MEDIUM] CWE-59 CVE-2026-49180: Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll)
Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.
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