CVE-2021-27053: Microsoft Excel XLS File Parsing Use-After-Free Remote Code Execution Vulnerability
First published: Tue Mar 09 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 Office Online Server | ||
| Microsoft Excel 2016 | ||
| Microsoft Excel 2013 | ||
| Microsoft Excel 2013 RT | ||
| Microsoft Excel 2013 | ||
| Microsoft Excel 2010 | ||
| Microsoft Excel 2010 | ||
| Microsoft 365 Apps for Enterprise | ||
| Microsoft Office Web Apps Server 2013 | ||
| Microsoft Office 2019 for 32-bit editions | ||
| Microsoft Excel 2016 | ||
| Microsoft Office 2019 for 64-bit editions | ||
| Microsoft 365 Apps | ||
| Microsoft Excel | =2010-sp2 | |
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2016 | |
| Microsoft Office | =2019 | |
| Microsoft Office Online Server | ||
| Microsoft Office Web Apps | =2013-sp1 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-27053?
CVE-2021-27053 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel.
How severe is CVE-2021-27053?
CVE-2021-27053 has a severity rating of 7.8, which is considered high.
Which versions of Microsoft Excel are affected by CVE-2021-27053?
Microsoft Excel 2013, Excel 2016, Excel 2013 RT, and Excel 2010 are affected by CVE-2021-27053.
How can I fix CVE-2021-27053?
To fix CVE-2021-27053, you should install the appropriate patches provided by Microsoft for your version of Microsoft Excel.
Where can I find more information about CVE-2021-27053?
You can find more information about CVE-2021-27053 on the Microsoft Security Guidance Advisory page and the Zero Day Initiative advisories.
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