What is the severity of CVE-2021-40471?

CVE-2021-40471 has a critical severity rating that allows remote code execution vulnerabilities in Microsoft Excel.

How do I fix CVE-2021-40471?

To fix CVE-2021-40471, install the latest security updates provided by Microsoft for the affected versions of Office.

What versions of Microsoft Office are affected by CVE-2021-40471?

CVE-2021-40471 affects Microsoft 365 Apps, Office 2013 SP1, Office 2016, Office 2019, and Office Long Term Servicing Channel 2021.

What is the exploitation risk of CVE-2021-40471?

The exploitation risk of CVE-2021-40471 includes unauthorized access and control over affected systems if users open a crafted Excel file.

Is there a workaround for CVE-2021-40471?

There are no official workarounds for CVE-2021-40471, and updating to the latest version is recommended for protection.

Vulnerability/
CVE-2021-40471

high

7.8

13/10/2021

4/8/2024

CVE-2021-40471: Microsoft Excel Remote Code Execution Vulnerability

First published: Wed Oct 13 2021(Updated: 8 months ago)

Microsoft Excel Remote Code Execution Vulnerability

Credit: secure@microsoft.com

Affected Software	Affected Version	How to fix
Microsoft 365 Apps for enterprise
Microsoft Office	=2013-sp1
Microsoft Office	=2013-sp1
Microsoft Office	=2016
Microsoft Office	=2019
Microsoft Office Long Term Servicing Channel	=2021

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40471

Never miss a vulnerability like this again

Reference Links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40471

Frequently Asked Questions

What is the severity of CVE-2021-40471?
CVE-2021-40471 has a critical severity rating that allows remote code execution vulnerabilities in Microsoft Excel.
How do I fix CVE-2021-40471?
To fix CVE-2021-40471, install the latest security updates provided by Microsoft for the affected versions of Office.
What versions of Microsoft Office are affected by CVE-2021-40471?
CVE-2021-40471 affects Microsoft 365 Apps, Office 2013 SP1, Office 2016, Office 2019, and Office Long Term Servicing Channel 2021.
What is the exploitation risk of CVE-2021-40471?
The exploitation risk of CVE-2021-40471 includes unauthorized access and control over affected systems if users open a crafted Excel file.
Is there a workaround for CVE-2021-40471?
There are no official workarounds for CVE-2021-40471, and updating to the latest version is recommended for protection.

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