CVE intelligence

CVE-2026-20945

Vulnerability intelligence

Published Apr 14, 2026Sources checked Nov 11, 2026

5.4MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-20945 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: Apr 14, 2026

Install KB5002861. Install KB5002862. Install KB5002854. Install KB5002856. Install KB5002853.

Vendor-listed releases

16.0.5548.1003
16.0.10417.20114
16.0.19725.20210

CISA KEVNot listedBased on the latest collected catalog

EPSS19.1%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-20945?

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