Is CVE-2021-40486 in the CISA KEV catalog?

No. CVE-2021-40486 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40486?

CVE-2021-40486 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-40486?

CVE-2021-40486 has an EPSS score of 5.69% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40486?

Install KB5002027 for Microsoft Office Online Server. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40486

HIGHEPSS 92th pctl

7.8

CVSS v3

NVD

Description

Microsoft Word Remote Code Execution Vulnerability

How to fix

Remediation Available

Microsoft Office Online ServerMicrosoft

Install:KB5002027Microsoft

Microsoft Office Web Apps Server 2013 Service Pack 1Microsoft

Install:KB5002036Microsoft

Microsoft SharePoint Enterprise Server 2013 Service Pack 1Microsoft

Install:KB5001924Microsoft

Microsoft SharePoint Enterprise Server 2016Microsoft

Install:KB5002006Microsoft

Install:KB5002029Microsoft

Microsoft SharePoint Server 2019Microsoft

Install:KB5002028Microsoft

Microsoft Word 2013 RT Service Pack 1Microsoft

Install:KB5001960

Microsoft Word 2013 Service Pack 1Microsoft

Install:KB5001960Microsoft

Microsoft Word 2016Microsoft

Install:KB5002004Microsoft

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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

5.69%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% 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.