Is CVE-2021-40442 in the CISA KEV catalog?

No. CVE-2021-40442 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40442?

CVE-2021-40442 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-40442?

CVE-2021-40442 has an EPSS score of 2.07% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40442?

Install KB5002072 for Microsoft Excel 2013 RT Service Pack 1. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40442

HIGHEPSS 79th pctl

7.8

CVSS v3

NVD

Description

Microsoft Excel Remote Code Execution Vulnerability

How to fix

Remediation Available

Microsoft Excel 2013 RT Service Pack 1Microsoft

Install:KB5002072

Microsoft Excel 2013 Service Pack 1Microsoft

Install:KB5002072Microsoft

Microsoft Excel 2016Microsoft

Install:KB5002056Microsoft

Microsoft Office Online ServerMicrosoft

Install:KB5002053Microsoft

Microsoft Office Web Apps Server 2013 Service Pack 1Microsoft

Install:KB5002065Microsoft

Microsoft SharePoint Enterprise Server 2013 Service Pack 1Microsoft

Install:KB5002063Microsoft

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

2.07%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% 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.