CVE-2026-20943

Microsoft Office Click-To-Run Remote Code Execution Vulnerability

State: Published
Severity: 7.0 High
Published: Jan 13, 2026
Updated: Jul 30, 2026
Reserved: Dec 4, 2025

Description

Untrusted search path in Microsoft Office allows an unauthorized attacker to execute code locally.

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-426 Untrusted Search Path

Affected Products

Product	Versions
Microsoft Office 2016Microsoft	16.0.0 to before 16.0.5535.1000Affected
Microsoft Office Deployment ToolMicrosoft	1.0 to before 16.0.19426.20170Affected
Microsoft SharePoint Enterprise Server 2016Microsoft	16.0.0 to before 16.0.5535.1001Affected
Microsoft SharePoint Server 2019Microsoft	16.0.0 to before 16.0.10417.20083Affected
Microsoft SharePoint Server Subscription EditionMicrosoft	16.0.0 to before 16.0.19127.20442Affected

References

Microsoft Office Click-To-Run Remote Code Execution Vulnerabilityvendor-advisorypatch

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