Description
An elevation of privilege vulnerability exists in Windows Error Reporting (WER) when WER handles and executes files. The vulnerability could allow elevation of privilege if an attacker can successfully exploit it. An attacker who successfully exploited the vulnerability could gain greater access to sensitive information and system functionality. To exploit the vulnerability, an attacker could run a specially crafted application. The security update addresses the vulnerability by correcting the way that WER handles and executes files.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1507 | >= 10.0.10240.0, < publication |
| Microsoft | Windows 10 Version 1607 | >= 10.0.14393.0, < publication |
| Microsoft | Windows 10 Version 1709 | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1709 for 32-bit Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1803 | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1809 | >= 10.0.17763.0, < publication |
| Microsoft | Windows 10 Version 1809 | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1909 | >= 10.0.0, < publication |
| Microsoft | Windows Server 2016 | >= 10.0.14393.0, < publication |
| Microsoft | Windows Server 2016 (Server Core installation) | >= 10.0.14393.0, < publication |
| Microsoft | Windows Server 2019 | >= 10.0.17763.0, < publication |
| Microsoft | Windows Server 2019 (Server Core installation) | >= 10.0.17763.0, < publication |
| Microsoft | Windows Server, version 1803 (Server Core Installation) | >= 10.0.0, < publication |
| Microsoft | Windows Server, version 1903 (Server Core installation) | >= 10.0.0, < publication |
| Microsoft | Windows Server, version 1909 (Server Core installation) | >= 10.0.0, < publication |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1021
- http://packetstormsecurity.com/files/158028/Microsoft-Windows-Privilege-Escalation-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1021Patch, Vendor Advisory
Timeline
- Published
- May 21, 2020
- Last modified
- Aug 19, 2026
- NVD status
- Modified