Is CVE-2021-42284 in the CISA KEV catalog?

No. CVE-2021-42284 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-42284?

CVE-2021-42284 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2021-42284?

CVE-2021-42284 has an EPSS score of 3.37% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-42284?

Install KB5007207 for Windows 10. Fixes are available for 18 affected products.

CVE & CISA-KEV Catalog

CVE-2021-42284

MEDIUMEPSS 87th pctl

6.8

CVSS v3

NVD

Description

Windows Hyper-V Denial of Service 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 21H1Windows

Install:KB5007186Microsoft

Windows 11 version 21H2Windows

Install:KB5007215Microsoft

Windows 8.1Windows

Install:KB5007255Microsoft

Install:KB5007247Microsoft

Windows Server 2012 R2Windows

Install:KB5007247Microsoft

Install:KB5007255Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5007255Microsoft

Install:KB5007247Microsoft

Windows Server 2016Windows

Install:KB5007192Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5007192Microsoft

Windows Server 2019Windows

Install:KB5007206Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5007206Microsoft

Windows Server 2022Windows

Install:KB5007205Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5007205Microsoft

Windows Server, version 2004 (Server Core installation)Windows

Install:KB5007186Microsoft

Windows Server, version 20H2 (Server Core Installation)Windows

Install:KB5007186Microsoft

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 VectorAdjacent

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.37%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% 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 2024-11-21.