CVE-2021-31939: Microsoft Excel XLS File Parsing Use-After-Free Remote Code Execution Vulnerability
First published: Tue Jun 08 2021(Updated: )
Microsoft Excel Remote Code Execution Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Office 2019 for 32-bit editions | ||
| Microsoft Office 2019 for 64-bit editions | ||
| Microsoft Office Online Server | ||
| Microsoft Office 2016 | ||
| Microsoft 365 Apps for Enterprise | ||
| Microsoft Office 2013 RT | ||
| Microsoft Excel 2013 RT | ||
| Microsoft Excel 2016 | ||
| Microsoft Office 2013 | ||
| Microsoft Office Web Apps Server 2013 | ||
| Microsoft Office 2013 | ||
| Microsoft Excel 2013 | ||
| Microsoft Excel 2016 | ||
| Microsoft 365 Apps for Enterprise | ||
| Microsoft Office 2016 | ||
| Microsoft Excel 2013 | ||
| Microsoft Excel | ||
| Microsoft 365 Apps | ||
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2016 | |
| Microsoft Office | =2013-sp1 | |
| Microsoft Office | =2013-sp1 | |
| Microsoft Office | =2016 | |
| Microsoft Office | =2019 | |
| Microsoft Office Online Server | ||
| Microsoft Office Web Apps Server | =2013-sp1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-31939?
The severity of CVE-2021-31939 is high with a CVSS score of 7.8.
How does CVE-2021-31939 affect Microsoft Excel?
CVE-2021-31939 allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel.
What is the impact of CVE-2021-31939?
The impact of CVE-2021-31939 is remote code execution, which could lead to unauthorized access, data leakage, or system compromise.
Is user interaction required to exploit CVE-2021-31939?
Yes, user interaction is required to exploit CVE-2021-31939, such as visiting a malicious page or opening a malicious file.
How can I fix CVE-2021-31939?
To fix CVE-2021-31939, it is recommended to apply the latest security updates provided by Microsoft.
- collector/msrc-cve
- collector/zdi-advisory
- alias/ZDI-21-670
- alias/ZDI-CAN-13681
- alias/CVE-2021-31939
- collector/mitre-cve
- agent/references
- agent/author
- agent/type
- agent/event
- agent/remedy
- agent/last-modified-date
- agent/first-publish-date
- agent/severity
- agent/description
- agent/title
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- vendor/microsoft
- canonical/microsoft office 2019 for 32-bit editions
- canonical/microsoft office 2019 for 64-bit editions
- canonical/microsoft office online server
- canonical/microsoft office 2016
- canonical/microsoft 365 apps for enterprise
- canonical/microsoft office 2013 rt
- canonical/microsoft excel 2013 rt
- canonical/microsoft excel 2016
- canonical/microsoft office 2013
- canonical/microsoft office web apps server 2013
- canonical/microsoft excel 2013
- canonical/microsoft excel
- canonical/microsoft 365 apps
- version/microsoft excel/2013-sp1
- version/microsoft excel/2016
- canonical/microsoft office
- version/microsoft office/2013-sp1
- version/microsoft office/2016
- version/microsoft office/2019
- canonical/microsoft office web apps server
- version/microsoft office web apps server/2013-sp1