Is CVE-2021-38665 in the CISA KEV catalog?

No. CVE-2021-38665 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38665?

CVE-2021-38665 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2021-38665?

CVE-2021-38665 has an EPSS score of 6.20% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38665?

Install KB5007207 for Windows 10. Fixes are available for 17 affected products.

CVE & CISA-KEV Catalog

CVE-2021-38665

HIGHEPSS 93th pctl

7.4

CVSS v3

NVD

Description

Remote Desktop Protocol Client Information Disclosure Vulnerability

How to fix

Remediation Available

Windows 10Windows

Install:KB5007207Microsoft

Windows 10 Version 1607Windows

Install:KB5007192Microsoft

Windows 10 Version 1809Windows

Install:KB5007206Microsoft

Windows 10 Version 1909Windows

Install:KB5007189Microsoft

Windows 10 Version 2004Windows

Install:KB5007186Microsoft

Windows 10 Version 20H2Windows

Install:KB5007186Microsoft

Windows 10 Version 21H1Windows

Install:KB5007186Microsoft

Windows 11 version 21H2Windows

Install:KB5007215Microsoft

Windows 7Windows

Install:KB5007236Microsoft

Install:KB5007233Microsoft

Windows 8.1Windows

Install:KB5007255Microsoft

Install:KB5007247Microsoft

Windows RT 8.1Windows

Install:KB5007247

Windows Server 2008 R2Windows

Install:KB5007233Microsoft

Install:KB5007236Microsoft

Windows Server 2012Windows

Install:KB5007245Microsoft

Install:KB5007260Microsoft

Windows Server 2012 R2Windows

Install:KB5007247Microsoft

Install:KB5007255Microsoft

Windows Server 2016Windows

Install:KB5007192Microsoft

Windows Server 2019Windows

Install:KB5007206Microsoft

Windows Server 2022Windows

Install:KB5007205Microsoft

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Exploit Intelligence

6.20%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-07-07.