CVE intelligence

CVE-2026-55016

Vulnerability intelligence

Published Jul 14, 2026Sources checked Nov 12, 2026

5.4MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-55016 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.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Jul 14, 2026

Install KB5002891. Install KB5002883. Install KB5002882.

Vendor-listed releases

16.0.5561.1001
16.0.10417.20175
16.0.19725.20434

CISA KEVNot listedBased on the latest collected catalog

EPSS0.6%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-55016?

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Source: NVD