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Vulnerability record · CVE-2021-38666 · published 10 November 2021
CVE-2021-38666: Microsoft windows 10 vulnerability
Microsoft · Windows 10
Remote Desktop Client Remote Code Execution Vulnerability
8.8 CVSS 3.1 High EPSS 15% · top 3.4%
8.8CVSS 3.1 base score, v2 6.8
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
2References
19 Aug 2026Last modified by NVD
Description
Remote Desktop Client Remote Code Execution Vulnerability
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
Track CVE-2021-38666 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
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Source: NIST National Vulnerability Database (record CVE-2021-38666), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.
