CVE-2026-20943

Microsoft Office Click-To-Run Remote Code Execution Vulnerability

CVE-2026-20943 is fixed in 5 products on 1 platform, first by KB5002826, released January 13, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0065

51st percentile

<p>Untrusted search path in Microsoft Office allows an unauthorized attacker to execute code locally.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft Office 2016 (32-bit edition)	KB5002826	Jan 13, 2026
Microsoft Office 2016 (64-bit edition)	KB5002826	Jan 13, 2026
Microsoft SharePoint Enterprise Server 2016	KB5002828	Jan 13, 2026
Microsoft SharePoint Server 2019	KB5002825	Jan 13, 2026
Microsoft SharePoint Server Subscription Edition	KB5002822	Jan 13, 2026

Details

Published
January 13, 2026
Weakness
Untrusted Search Path
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20943

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