Is CVE-2021-40485 in the CISA KEV catalog?

No. CVE-2021-40485 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40485?

CVE-2021-40485 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-40485?

CVE-2021-40485 has an EPSS score of 2.54% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40485?

Install KB5002043 for Microsoft Excel 2013 RT Service Pack 1. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40485

HIGHEPSS 83th pctl

7.8

CVSS v3

NVD

Description

Microsoft Excel Remote Code Execution Vulnerability

CWE-94Code Injection

How to fix

Remediation Available

Microsoft Excel 2013 RT Service Pack 1Microsoft

Install:KB5002043

Microsoft Excel 2013 Service Pack 1Microsoft

Install:KB5002043Microsoft

Microsoft Excel 2016Microsoft

Install:KB5002030Microsoft

Microsoft Office Online ServerMicrosoft

Install:KB5002027Microsoft

Microsoft SharePoint Enterprise Server 2013 Service Pack 1Microsoft

Install:KB4493202Microsoft

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

2.54%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

Related Vulnerabilities

Other CWE-94 (Code Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-9841	Critical	9.8	100%	KEV	Fix
CVE-2015-1635	Critical	9.8	100%	KEV	-
CVE-2022-22954	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-22204	Medium	6.8	100%	KEV	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2012-0158	High	8.8	100%	KEV	-

Embed a live status badge for CVE-2021-40485

Markdown

[![CVE-2021-40485](https://tridentstack.com/cve/badge/CVE-2021-40485.svg)](https://tridentstack.com/cve/CVE-2021-40485)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-40485"><img src="https://tridentstack.com/cve/badge/CVE-2021-40485.svg" alt="CVE-2021-40485"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2025-02-28.