Is CVE-2021-43893 in the CISA KEV catalog?

No. CVE-2021-43893 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43893?

CVE-2021-43893 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-43893?

CVE-2021-43893 has an EPSS score of 6.62% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43893?

Install KB5008230 for Windows 10. Fixes are available for 26 affected products.

CVE & CISA-KEV Catalog

CVE-2021-43893

HIGHEPSS 93th pctl

7.5

CVSS v3

NVD

Description

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

CWE-668

How to fix

Remediation Available

Windows 10Windows

Install:KB5008230Microsoft

Windows 10 Version 1607Windows

Install:KB5008207Microsoft

Windows 10 Version 1809Windows

Install:KB5008218Microsoft

Windows 10 Version 1909Windows

Install:KB5008206Microsoft

Windows 10 Version 2004Windows

Install:KB5008212Microsoft

Windows 10 Version 20H2Windows

Install:KB5008212Microsoft

Windows 10 Version 21H1Windows

Install:KB5008212Microsoft

Windows 10 Version 21H2Windows

Install:KB5008212Microsoft

Windows 11 version 21H2Windows

Install:KB5008215Microsoft

Windows 7Windows

Install:KB5008244Microsoft

Install:KB5008282Microsoft

Windows 8.1Windows

Install:KB5008285Microsoft

Install:KB5008263Microsoft

Windows RT 8.1Windows

Install:KB5008263Microsoft

Windows Server 2008Windows

Install:KB5008274Microsoft

Install:KB5008271Microsoft

Windows Server 2008 R2Windows

Install:KB5008282Microsoft

Install:KB5008244Microsoft

Windows Server 2012Windows

Install:KB5008277Microsoft

Install:KB5008255Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5008277Microsoft

Install:KB5008255Microsoft

Windows Server 2012 R2Windows

Install:KB5008263Microsoft

Install:KB5008285Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5008263Microsoft

Install:KB5008285Microsoft

Windows Server 2016Windows

Install:KB5008207Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5008207Microsoft

Windows Server 2019Windows

Install:KB5008218Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5008218Microsoft

Windows Server 2022Windows

Install:KB5008223Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5008223Microsoft

Windows Server, version 2004 (Server Core installation)Windows

Install:KB5008212Microsoft

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

Install:KB5008212Microsoft

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 ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

6.62%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

Third-Party Advisory1

packetstormsecurity.com

Embed a live status badge for CVE-2021-43893

Markdown

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HTML

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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.