CVE-2021-43256: Microsoft Excel Remote Code Execution Vulnerability
First published: Wed Dec 15 2021(Updated: )
Microsoft Excel Remote Code Execution Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft 365 Apps | ||
| Microsoft 365 Apps | ||
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2013-sp1 | |
| Microsoft Excel | =2016 | |
| Microsoft Excel | =2016 | |
| Microsoft Excel Rt | =2013-sp1 | |
| Microsoft Office | =2019 | |
| Microsoft Office | =2019 | |
| Microsoft Office | =2021 | |
| Microsoft Office | =2021 | |
| Microsoft Office Online Server | ||
| Microsoft Office Web Apps | =2013-sp1 | |
| =2013-sp1 | ||
| =2013-sp1 | ||
| =2016 | ||
| =2016 | ||
| =2013-sp1 | ||
| =2019 | ||
| =2019 | ||
| =2021 | ||
| =2021 | ||
| =2013-sp1 |
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Frequently Asked Questions
What is CVE-2021-43256?
CVE-2021-43256 is a Microsoft Excel Remote Code Execution Vulnerability.
What software is affected by CVE-2021-43256?
Microsoft Office LTSC for Mac 2021, Microsoft Excel 2013 SP1, Microsoft Excel 2016, Microsoft Excel Rt, Microsoft Office 2019, Microsoft Office 2021, Microsoft Office Online Server, and Microsoft Office Web Apps are affected by CVE-2021-43256.
What is the severity of CVE-2021-43256?
CVE-2021-43256 has a severity rating of 7.8 (High).
How can I fix CVE-2021-43256?
Apply the latest security updates provided by Microsoft to mitigate CVE-2021-43256.
Where can I find more information about CVE-2021-43256?
You can find more information about CVE-2021-43256 on the Microsoft Security Guidance Advisory page: <https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43256>
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- canonical/microsoft excel rt
- version/microsoft excel rt/2013-sp1
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- version/microsoft office/2019
- version/microsoft office/2021
- canonical/microsoft office online server
- canonical/microsoft office web apps
- version/microsoft office web apps/2013-sp1