CVE-2021-34501: Microsoft Excel XLS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
First published: Tue Jul 13 2021(Updated: )
Microsoft Excel Remote Code Execution Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Excel | ||
| Microsoft 365 Apps for Enterprise | ||
| Microsoft Excel 2013 RT | ||
| Microsoft Excel 2013 | ||
| Microsoft Office 2019 for Mac | ||
| Microsoft Excel 2016 | ||
| Microsoft Excel 2016 | ||
| Microsoft 365 Apps for Enterprise | ||
| Microsoft Excel 2013 | ||
| Microsoft Office 2019 for 64-bit editions | ||
| Microsoft Office Online Server | ||
| Microsoft Office 2019 for 32-bit editions | ||
| Microsoft 365 Apps | ||
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2016 | |
| Microsoft Office | =2019 | |
| Microsoft Office | =2019 | |
| Microsoft Office Online Server |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-34501?
CVE-2021-34501 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel.
How severe is CVE-2021-34501?
CVE-2021-34501 has a severity score of 8.8, which is considered high.
What software is affected by CVE-2021-34501?
Microsoft Excel 2016, Microsoft Excel 2013, Microsoft Office Online Server, Microsoft 365 Apps for Enterprise, Microsoft Excel 2013 RT, Microsoft Office 2019 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, and Microsoft 365 Apps for Enterprise (x86) are affected by CVE-2021-34501.
How do I fix CVE-2021-34501 on Microsoft Excel 2016?
To fix CVE-2021-34501 on Microsoft Excel 2016, you can apply the patch provided by Microsoft. Please refer to the following URL for more information: [link](https://www.microsoft.com/downloads/details.aspx?familyid=896cd62a-4be0-4156-9ba1-b5a7e9cf4e3e)
How do I fix CVE-2021-34501 on Microsoft Excel 2013?
To fix CVE-2021-34501 on Microsoft Excel 2013, you can apply the patch provided by Microsoft. Please refer to the following URL for more information: [link](https://www.microsoft.com/downloads/details.aspx?familyid=db0dadc7-f5ad-446c-a614-82f53cd238d4)
- agent/type
- agent/first-publish-date
- collector/msrc-cve
- source/Microsoft
- agent/author
- agent/remedy
- agent/title
- agent/references
- agent/severity
- agent/software-canonical-lookup
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/description
- collector/nvd-api
- source/NVD
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-969
- alias/ZDI-CAN-13508
- alias/CVE-2021-34501
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- agent/trending
- vendor/microsoft
- canonical/microsoft 365 apps for enterprise
- canonical/microsoft excel 2013 rt
- canonical/microsoft excel 2013
- canonical/microsoft office 2019 for mac
- canonical/microsoft excel 2016
- canonical/microsoft office 2019 for 64-bit editions
- canonical/microsoft office online server
- canonical/microsoft office 2019 for 32-bit editions
- canonical/microsoft 365 apps
- canonical/microsoft excel
- version/microsoft excel/2013-sp1
- version/microsoft excel/2016
- canonical/microsoft office
- version/microsoft office/2019