Vulnerability · Published May 21, 2020 · Assigned by microsoft
CVE-2020-1121Windows Clipboard Service Elevation of Privilege Vulnerability
High 7.0
In plain English
A high-severity security flaw in Windows 10 Version 1809 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).
Official description
An elevation of privilege vulnerability exists when Windows improperly handles calls to Clipboard Service. An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system. The update addresses the vulnerability by correcting how Windows handles calls to Clipboard Service.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before publication |
| Microsoft | Windows 10 Version 1809 | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before publication |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before publication |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before publication |
| Microsoft | Windows Server, version 1903 (Server Core installation) | 10.0.0 – before publication |
| Microsoft | Windows Server, version 1909 (Server Core installation) | 10.0.0 – before publication |
References
- Windows Clipboard Service Elevation of Privilege Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1121 x_refsource_MISC, x_transferred