CVE-2026-56157

Microsoft SharePoint Server Spoofing Vulnerability

State: Published
Severity: 5.4 Medium
Published: Jul 14, 2026
Updated: Nov 1, 2026
Reserved: Jun 19, 2026

Description

Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
Microsoft SharePoint Enterprise Server 2016Microsoft	16.0.0 to before 16.0.5561.1001Affected
Microsoft SharePoint Server 2019Microsoft	16.0.0 to before 16.0.10417.20175Affected
Microsoft SharePoint Server Subscription EditionMicrosoft	16.0.0 to before 16.0.19725.20434Affected

References

Microsoft SharePoint Server Spoofing Vulnerabilityvendor-advisorypatch

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