CVE-2022-21851
Published: 11 January 2022
Summary
CVE-2022-21851 is a high-severity an unspecified weakness vulnerability in Microsoft Windows 10. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 6.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-21851 is a remote code execution vulnerability affecting the Remote Desktop Client. It carries a CVSS 3.1 base score of 8.8 with network attack vector, low attack complexity, no required privileges, and required user interaction, resulting in high impact to confidentiality, integrity, and availability.
An attacker can exploit the flaw by supplying a malicious Remote Desktop server or connection target that a user connects to, allowing arbitrary code execution on the client system once the connection is established.
Microsoft security advisories at the listed MSRC URLs detail available patches and mitigation steps for the affected Remote Desktop Client components.
The associated EPSS score rose from a low baseline to a peak of 0.1804 on 2025-01-22 before receding to the current value of 0.0998, indicating a period of increased exploitation interest well after the 2022 disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-27007
Vulnerability details
Remote Desktop Client Remote Code Execution Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.