# CVE-2023-21716

Microsoft Word Remote Code Execution Vulnerability

- Page: https://www.vulneraibility.com/cve/CVE-2023-21716
- CVSS: 9.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 84.80% (percentile 99.7)
- Unvetted proof-of-concept code on GitHub: 12 GitHub proofs of concept (first 2023-03-07)
- CISA SSVC: exploitation none, automatable yes, technical impact total (assessed 2025-02-28)
- Weakness: CWE-190
- Published: 2023-02-14

## Affected versions

- Microsoft Microsoft 365 Apps for Enterprise: affected >= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
- Microsoft Microsoft Office 2019: affected >= 19.0.0 and < https://aka.ms/OfficeSecurityReleases
- Microsoft Microsoft Office 2019 for Mac: affected >= 16.0.0 and < 16.70.23021201
- Microsoft Microsoft Office LTSC 2021: affected >= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
- Microsoft Microsoft Office LTSC for Mac 2021: affected >= 16.0.1 and < 16.70.23021201
- Microsoft Microsoft Office Online Server: affected >= 16.0.1 and < 16.0.10395.20001
- Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1: affected >= 15.0.1 and < 15.0.5529.1000
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1: affected >= 15.0.0 and < 15.0.5529.1000
- Microsoft Microsoft SharePoint Enterprise Server 2016: affected >= 16.0.0 and < 16.0.5383.1000
- Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1: affected >= 15.0.0 and < 15.0.5529.1000
- Microsoft Microsoft SharePoint Server 2019: affected >= 16.0.0 and < 16.0.10395.20001
- Microsoft Microsoft SharePoint Server Subscription Edition: affected >= 16.0.0 and < 16.0.15601.20478
- Microsoft Microsoft Word 2013 Service Pack 1: affected >= 15.0.1 and < 15.0.5529.1000
- Microsoft Microsoft Word 2016: affected >= 16.0.1 and < 16.0.5383.1000
- Microsoft SharePoint Server Subscription Edition Language Pack: affected >= 16.0.0 and < 16.0.15601.20478

A version outside these ranges is not a statement that it is unaffected.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21716

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.