CVE intelligence

CVE-2026-56157

Vulnerability intelligence

Published Jul 14, 2026Sources checked Sep 28, 2026

5.4MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-56157 and is rated Medium severity with a CVSS score of 5.4. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.5%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-56157?

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