Vulnerability · Published Mar 11, 2021 · Assigned by microsoft
CVE-2021-26867Windows Hyper-V Remote Code Execution Vulnerability
Critical 9.9
In plain English
A critical-severity security flaw in Windows 10 Version 1909 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)2.9%top 13.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Windows Hyper-V Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before 10.0.18363.1440 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 – before 10.0.19043.867 |
| Microsoft | Windows Server version 2004 | 10.0.0 – before 10.0.19043.867 |
| Microsoft | Windows Server version 20H2 | 10.0.0 – before 10.0.19043.867 |
| Microsoft | Windows Server, version 1909 (Server Core installation) | 10.0.0 – before 10.0.18363.1440 |
References
- Windows Hyper-V Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26867 x_refsource_MISC, x_transferred