CVE-2021-38655: Microsoft Excel Remote Code Execution Vulnerability

Published Sep 14, 2021
·
Updated

Microsoft Excel Remote Code Execution Vulnerability

Affected Software

20 affected componentsFixes available
Microsoft Office Online Server
Microsoft Excel 2013
Microsoft Excel 2013
Microsoft Excel 2013 RT
Microsoft Office Web Apps Server 2013
Microsoft Office 2019 for 32-bit editions
Microsoft Office 2019 for 64-bit editions
Microsoft 365 Apps for Enterprise
Microsoft 365 Apps for Enterprise
Microsoft 365 Apps
Microsoft Excel=2013
Microsoft Excel=2013-sp1
Microsoft Excel=2016
Microsoft Office=2019
Microsoft Office Macos=2019
Microsoft Office Online Server
Microsoft Office Web Apps=2013-sp1
Microsoft Office 2019 for Mac
Microsoft Excel 2016
Microsoft Excel 2016

Event History

Sep 14, 2021
CVE Published
via Microsoft·07:00 AM
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeakness
Sep 15, 2021
CVE Published
via MITRE·11:24 AM
Data Sourced
via MITRE·11:24 AM
DescriptionSeverity
Data Sourced
via NVD·12:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Jun 29, 2026
Advisory Published
via ZDI·04:43 AM
Data Sourced
via ZDI·04:43 AM
DescriptionAffected Software
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Frequently Asked Questions

1

What is CVE-2021-38655?

CVE-2021-38655 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel.

2

How severe is the CVE-2021-38655 vulnerability?

The severity of the CVE-2021-38655 vulnerability is rated as high, with a severity value of 7.8.

3

Which software is affected by CVE-2021-38655?

CVE-2021-38655 affects Microsoft Excel versions 2013, 2013-sp1, 2016, Office Web Apps Server 2013, 365 Apps for Enterprise (x86_64 and x86), Office 2019 for 32-bit and 64-bit editions, and Microsoft Office LTSC for Mac 2021.

4

How can I fix the CVE-2021-38655 vulnerability?

To fix the CVE-2021-38655 vulnerability, apply the necessary patches or updates provided by Microsoft for the affected software versions.

5

Where can I find more information about CVE-2021-38655?

More information about CVE-2021-38655 can be found on the Microsoft Security Response Center (MSRC) website and the Zero Day Initiative (ZDI) website.

Contact

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