CVE-2026-56157

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

Score

CVSS 3.1 5.4 Medium

Status

Analyzed - secure@microsoft.com

Published

2026-07-14

Last modified

2026-10-28

Weaknesses

CWE-284

Affected products

• Sharepoint Server (Microsoft)
• Sharepoint Server 2016 (Microsoft)
• Sharepoint Server 2019 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56157