W1
Product
Windows 10 Version 21H2
On CISA KEVExploited in the wildRansomware-linked
3,749
CVEs
100
On KEV
9.9
Max CVSS
681
New 30D
Severity mix
Critical 119High 364Medium 17Low 0
Watch
Add Windows 10 Version 21H2 to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2026-25188 | 8.8 | Mar 10 | Windows Telephony Service Elevation of Privilege Vulnerability Affected: before 10.0.19044.7058; before 10.0.19044.7058; before 10.0.19044.7058 |
| CVE-2026-25177 | 8.8 | Mar 10 | Active Directory Domain Services Elevation of Privilege Vulnerability Affected: before 10.0.19044.7058; before 10.0.19044.7058; before 10.0.19044.7058 |
| CVE-2026-23669 | 8.8 | Mar 10 | RPC Runtime Library Remote Code Execution Vulnerability Affected: before 10.0.19044.7058; before 10.0.19044.7058; before 10.0.19044.7058 |
| CVE-2026-21255 | 8.8 | Feb 10 | Windows Hyper-V Security Feature Bypass Vulnerability Affected: before 10.0.19044.6937 |
| CVE-2026-20868 | 8.8 | Jan 13 | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Affected: before 10.0.19044.6809 |
| CVE-2025-64678 | 8.8 | Dec 9 | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Affected: before 10.0.19044.6575 |
| CVE-2025-62549 | 8.8 | Dec 9 | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Affected: before 10.0.19044.6691 |
| CVE-2025-58718 | 8.8 | Oct 14 | Remote Desktop Client Remote Code Execution Vulnerability Affected: before 10.0.19044.6456 |
| CVE-2025-59295 | 8.8 | Oct 14 | Windows URL Parsing Remote Code Execution Vulnerability Affected: before 10.0.19044.6456 |
| CVE-2025-58716 | 8.8 | Oct 14 | Windows Speech Runtime Elevation of Privilege Vulnerability Affected: before 10.0.19044.6456 |
| CVE-2025-58715 | 8.8 | Oct 14 | Windows Speech Runtime Elevation of Privilege Vulnerability Affected: before 10.0.19044.6456 |
| CVE-2025-54918 | 8.8 | Sep 9 | Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network Affected: before 10.0.19044.6332 |
| CVE-2025-54110 | 8.8 | Sep 9 | Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally Affected: before 10.0.19044.6332 |
| CVE-2025-53778 | 8.8 | Aug 12 | Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network Affected: before 10.0.19044.6216 |
| CVE-2025-53145 | 8.8 | Aug 12 | Access of resource using incompatible type ('type confusion') in Windows Message Queuing allows an authorized attacker to execute code over a network Affected: before 10.0.19044.6216 |
| CVE-2025-53144 | 8.8 | Aug 12 | Access of resource using incompatible type ('type confusion') in Windows Message Queuing allows an authorized attacker to execute code over a network Affected: before 10.0.19044.6216 |
| CVE-2025-53143 | 8.8 | Aug 12 | Access of resource using incompatible type ('type confusion') in Windows Message Queuing allows an authorized attacker to execute code over a network Affected: before 10.0.19044.6216 |
| CVE-2025-53131 | 8.8 | Aug 12 | Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.6216 |
| CVE-2025-49740 | 8.8 | Jul 8 | Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network Affected: before 10.0.19044.6093 |
| CVE-2025-49724 | 8.8 | Jul 8 | Use after free in Windows Connected Devices Platform Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.6093 |
| CVE-2025-49723 | 8.8 | Jul 8 | Missing authorization in Windows StateRepository API allows an authorized attacker to perform tampering locally Affected: before 10.0.19044.6093 |
| CVE-2025-49687 | 8.8 | Jul 8 | Out-of-bounds read in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally Affected: before 10.0.19044.6093 |
| CVE-2025-48817 | 8.8 | Jul 8 | Relative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.6093 |
| CVE-2025-47986 | 8.8 | Jul 8 | Use after free in Universal Print Management Service allows an authorized attacker to elevate privileges locally Affected: before 10.0.19044.6093 |
| CVE-2025-33066 | 8.8 | Jun 10 | Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5965 |
| CVE-2025-33064 | 8.8 | Jun 10 | Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network Affected: before 10.0.19044.5965 |
| CVE-2025-29967 | 8.8 | May 13 | Heap-based buffer overflow in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5854; before 10.0.19044.5854; before 10.0.19044.5854 |
| CVE-2025-29966 | 8.8 | May 13 | Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5854; before 10.0.19044.5854; before 10.0.19044.5854 |
| CVE-2025-29964 | 8.8 | May 13 | Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5854; before 10.0.19044.5854; before 10.0.19044.5854 |
| CVE-2025-29963 | 8.8 | May 13 | Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5854; before 10.0.19044.5854; before 10.0.19044.5854 |
| CVE-2025-29962 | 8.8 | May 13 | Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5854; before 10.0.19044.5854; before 10.0.19044.5854 |
| CVE-2025-29840 | 8.8 | May 13 | Stack-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5854; before 10.0.19044.5854; before 10.0.19044.5854 |
| CVE-2025-27481 | 8.8 | Apr 8 | Stack-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5737 |
| CVE-2025-27477 | 8.8 | Apr 8 | Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5737 |
| CVE-2025-26669 | 8.8 | Apr 8 | Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network Affected: before 10.0.19044.5737 |
| CVE-2025-21222 | 8.8 | Apr 8 | Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5737 |
| CVE-2025-21221 | 8.8 | Apr 8 | Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5737 |
| CVE-2025-21205 | 8.8 | Apr 8 | Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5737 |
| CVE-2025-26645 | 8.8 | Mar 11 | Relative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5608 |
| CVE-2025-24056 | 8.8 | Mar 11 | Heap-based buffer overflow in Windows Telephony Server allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5608 |
| CVE-2025-24051 | 8.8 | Mar 11 | Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network Affected: before 10.0.19044.5608 |
| CVE-2025-21407 | 8.8 | Feb 11 | Windows Telephony Service Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21406 | 8.8 | Feb 11 | Windows Telephony Service Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21371 | 8.8 | Feb 11 | Windows Telephony Service Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21369 | 8.8 | Feb 11 | Microsoft Digest Authentication Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21368 | 8.8 | Feb 11 | Microsoft Digest Authentication Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21201 | 8.8 | Feb 11 | Windows Telephony Server Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21200 | 8.8 | Feb 11 | Windows Telephony Service Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21190 | 8.8 | Feb 11 | Windows Telephony Service Remote Code Execution Vulnerability Affected: before 10.0.19044.5487 |
| CVE-2025-21417 | 8.8 | Jan 14 | Windows Telephony Service Remote Code Execution Vulnerability Affected: before 10.0.19044.5371 |
The 500 most important CVEs for this product (exploited first, then by severity)
