HIGH 7.0 Microsoft
CVE-2026-20943
Microsoft Office Click-To-Run Remote Code Execution Vulnerability
Microsoft Security Update 2026-Jan: Microsoft Office Click-To-Run Remote Code Execution Vulnerability
Affected Products
- Microsoft SharePoint Server 2019
- Microsoft Office 2016 (32-bit edition)
- Microsoft Office 2016 (64-bit edition)
- Microsoft SharePoint Enterprise Server 2016
- Microsoft SharePoint Server Subscription Edition
- Microsoft Office Deployment Tool
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20943
- https://nvd.nist.gov/vuln/detail/CVE-2026-20943
This high severity vulnerability with a CVSS score of 7.0 was published on 2026-01-13 via Microsoft. Affected: Microsoft SharePoint Server 2019, Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) and 3 more.
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