Windows Event Tracing Elevation of Privilege Vulnerability
Priority CRITICAL 93Exploited in the wildCWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.
Summary
Windows Event Tracing Elevation of Privilege Vulnerability
Why it matters now
Exploitation Active In CISA KEV since 2022-03-28CISA due date 2022-04-18
EPSS 0.09328 95th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 updates
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 to before 10.0.17763.2114 | 10.0.17763.2114 | Patch available | CNA |
| Microsoft | Windows 10 Version 1809 | 10.0.0 to before 10.0.17763.2114 | 10.0.17763.2114 | Patch available | CNA |
| Microsoft | Windows 10 Version 1909 | 10.0.0 to before 10.0.18363.1734 | 10.0.18363.1734 | Patch available | CNA |
| Microsoft | Windows 10 Version 2004 | 10.0.0 to before 10.0.19041.1165 | 10.0.19041.1165 | Patch available | CNA |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 to before 10.0.19042.1165 | 10.0.19042.1165 | Patch available | CNA |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 to before 10.0.19043.1165 | 10.0.19043.1165 | Patch available | CNA |
| Microsoft | Windows Server 2019 | 10.0.17763.0 to before 10.0.17763.2114 | 10.0.17763.2114 | Patch available | CNA |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 to before 10.0.17763.2114 | 10.0.17763.2114 | Patch available | CNA |
| Microsoft | Windows Server version 2004 | 10.0.0 to before 10.0.19041.1165 | 10.0.19041.1165 | Patch available | CNA |
| Microsoft | Windows Server version 20H2 | 10.0.0 to before 10.0.19042.1165 | 10.0.19042.1165 | Patch available | CNA |
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA
- Windows 10 Version 1909 VendorMicrosoft Affected 10.0.0 to before 10.0.18363.1734 Fixed in 10.0.18363.1734 Patch available CNA
- Windows 10 Version 2004 VendorMicrosoft Affected 10.0.0 to before 10.0.19041.1165 Fixed in 10.0.19041.1165 Patch available CNA
- Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.1165 Fixed in 10.0.19042.1165 Patch available CNA
- Windows 10 Version 21H1 VendorMicrosoft Affected 10.0.0 to before 10.0.19043.1165 Fixed in 10.0.19043.1165 Patch available CNA
- Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA
- Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA
- Windows Server version 2004 VendorMicrosoft Affected 10.0.0 to before 10.0.19041.1165 Fixed in 10.0.19041.1165 Patch available CNA
- Windows Server version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.1165 Fixed in 10.0.19042.1165 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:* | before 10.0.17763.2114 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:* | before 10.0.18363.1734 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:* | before 10.0.19041.1165 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:* | before 10.0.19042.1165 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:* | before 10.0.19043.1165 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* | before 10.0.19041.1165 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* | before 10.0.17763.2114 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:* | before 10.0.19042.1165 | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:* Versions before 10.0.17763.2114 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:* Versions before 10.0.18363.1734 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:* Versions before 10.0.19041.1165 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:* Versions before 10.0.19042.1165 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:* Versions before 10.0.19043.1165 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* Versions before 10.0.19041.1165 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.2114 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:* Versions before 10.0.19042.1165 Vulnerable ·Microsoft
Remediation
Microsoft 3 updates
- Security Update
- Windows 10 Version 2004 for 32-bit Systems 10.0.19041.1165
- Windows 10 Version 2004 for ARM64-based Systems 10.0.19041.1165
- Windows 10 Version 2004 for x64-based Systems 10.0.19041.1165
- Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.1165
- Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.1165
- Windows 10 Version 21H1 for 32-bit Systems 10.0.19043.1165
- Windows 10 Version 21H1 for ARM64-based Systems 10.0.19043.1165
- Windows 10 Version 21H1 for x64-based Systems 10.0.19043.1165
- Windows Server, version 2004 (Server Core installation) 10.0.19041.1165
- Windows Server, version 20H2 (Server Core Installation) 10.0.19042.1165
- Security Update
- Windows 10 Version 1909 for 32-bit Systems 10.0.18363.1734
- Windows 10 Version 1909 for ARM64-based Systems 10.0.18363.1734
- Windows 10 Version 1909 for x64-based Systems 10.0.18363.1734
- Security Update
- Windows 10 Version 1809 for 32-bit Systems 10.0.17763.2114
- Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.2114
- Windows 10 Version 1809 for x64-based Systems 10.0.17763.2114
- Windows Server 2019 10.0.17763.2114
- Windows Server 2019 (Server Core installation) 10.0.17763.2114
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Elevation of Privilege
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
Timeline
- 2022-03-28 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2021-34486
- 2026-10-03 Alias added: GHSA-793m-wq3j-whvr
References
More Microsoft Windows 10 1809 vulnerabilities
- TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2026-73128 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2026-17367 MSHTML Framework Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2026-17364 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2021-34486 · CVE Program
- CVE-2021-34486 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-793m-wq3j-whvr · GitHub Advisory Database · CC BY 4.0
- CVE-2021-34486 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences