Microsoft Windows 10 Version 21H2 vulnerabilities
3,631 known vulnerabilities affecting microsoft/windows_10_version_21h2.
Total CVEs
3,631
CISA KEV
98
actively exploited
Public exploits
68
Exploited in wild
126
Severity breakdown
CRITICAL104HIGH2642MEDIUM872LOW13
Vulnerabilities
Page 78 of 182
CVE-2026-34336P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.72912026-05-12
CVE-2026-34336 [HIGH] CWE-122 CVE-2026-34336: Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate
Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-33838P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.72912026-05-12
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-2026-26153P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.71842026-04-14
CVE-2026-26153 [HIGH] CWE-125 CVE-2026-26153: Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate
Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-27909P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.71842026-04-14
CVE-2026-27909 [HIGH] CWE-416 CVE-2026-27909: Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privil
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-26184P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.71842026-04-14
CVE-2026-26184 [HIGH] CWE-126 CVE-2026-26184: Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privilege
Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-24290P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.70582026-03-10
CVE-2026-24290 [HIGH] CWE-284 CVE-2026-24290: Improper access control in Windows Projected File System allows an authorized attacker to elevate pr
Improper access control in Windows Projected File System allows an authorized attacker to elevate privileges locally.
nvd
CVE-2025-53768P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.64562025-10-14
CVE-2025-53768 [HIGH] CWE-362 CVE-2025-53768: Use after free in Xbox allows an authorized attacker to elevate privileges locally.
Use after free in Xbox allows an authorized attacker to elevate privileges locally.
nvd
CVE-2025-59187P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.64562025-10-14
CVE-2025-59187 [HIGH] CWE-20 CVE-2025-59187: Improper input validation in Windows Kernel allows an authorized attacker to elevate privileges loca
Improper input validation in Windows Kernel allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-50343P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.75482026-07-14
CVE-2026-50343 [HIGH] CWE-269 CVE-2026-50343: Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate
Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-50423P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.75482026-07-14
CVE-2026-50423 [HIGH] CWE-284 CVE-2026-50423: Improper access control in Windows Kernel allows an authorized attacker to elevate privileges locall
Improper access control in Windows Kernel allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-33834P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.72912026-05-12
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-2025-49665P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.60932025-07-08
CVE-2025-49665 [HIGH] CWE-362 CVE-2025-49665: Concurrent execution using shared resource with improper synchronization ('race condition') in Works
Concurrent execution using shared resource with improper synchronization ('race condition') in Workspace Broker allows an authorized attacker to elevate privileges locally.
nvd
CVE-2025-49733P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.60932025-07-08
CVE-2025-49733 [HIGH] CWE-416 CVE-2025-49733: Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
nvd
CVE-2025-49725P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.60932025-07-08
CVE-2025-49725 [HIGH] CWE-416 CVE-2025-49725: Use after free in Windows Notification allows an authorized attacker to elevate privileges locally.
Use after free in Windows Notification allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-50491P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.75482026-07-14
CVE-2026-50491 [HIGH] CWE-125 CVE-2026-50491: Out-of-bounds read in Code Integrity DLL (ci.dll) allows an authorized attacker to elevate privilege
Out-of-bounds read in Code Integrity DLL (ci.dll) allows an authorized attacker to elevate privileges locally.
nvd
CVE-2025-59278P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.64562025-10-14
CVE-2025-59278 [HIGH] CWE-1287 CVE-2025-59278: Improper validation of specified type of input in Windows Authentication Methods allows an authorize
Improper validation of specified type of input in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
nvd
CVE-2025-59275P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.64562025-10-14
CVE-2025-59275 [HIGH] CWE-122 CVE-2025-59275: Improper validation of specified type of input in Windows Authentication Methods allows an authorize
Improper validation of specified type of input in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-20852P3HIGHCVSS 7.7≥ 10.0.19044.0, < 10.0.19044.68092026-01-13
CVE-2026-20852 [HIGH] CWE-266 CVE-2026-20852: Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
nvd
CVE-2026-20804P3HIGHCVSS 7.7≥ 10.0.19044.0, < 10.0.19044.68092026-01-13
CVE-2026-20804 [HIGH] CWE-266 CVE-2026-20804: Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
nvd
CVE-2026-61349P3HIGHCVSS 7.8≥ 10.0.19044.0, < 10.0.19044.76632026-08-11
CVE-2026-61349 [HIGH] CWE-362 CVE-2026-61349: Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges lo
Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges locally.
nvd