Is CVE-2021-27070 in the CISA KEV catalog?

No. CVE-2021-27070 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27070?

CVE-2021-27070 has a CVSS v3 base score of 7.3 (HIGH).

What is the EPSS score for CVE-2021-27070?

CVE-2021-27070 has an EPSS score of 2.92% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27070?

Install KB5000802 for Windows 10 Version 2004. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-27070

HIGHEPSS 85th pctl

7.3

CVSS v3

NVD

Description

Windows 10 Update Assistant Elevation of Privilege Vulnerability

CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

Windows 10 Version 2004Windows

Install:KB5000802Microsoft

Windows 10 Version 20H2Windows

Install:KB5000802Microsoft

Windows Server, version 2004 (Server Core installation)Windows

Install:KB5000802Microsoft

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

Install:KB5000802Microsoft

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.92%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

Third-Party Advisory1

zerodayinitiative.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.