CVE intelligence

CVE-2021-41372

Vulnerability intelligence

Published Nov 10, 2021Sources checked Nov 11, 2026

9.6CRITICALCVSS out of 10

What this means

Review the available evidence

CVE-2021-41372 and is rated Critical severity with a CVSS score of 9.6. 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: Aug 19, 2026

Install KB5007903.

Vendor-listed releases

1.11.8091.10468
1.12.7977.29537

CISA KEVNot listedBased on the latest collected catalog

EPSS0.7%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2021-41372?

A Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF) vulnerability exists when Power BI Report Server Template file (pbix) containing HTML files is uploaded to the server and HTML files are accessed directly by the victim.

Combining these 2 vulnerabilities together, an attacker is able to upload malicious Power BI templates files to the server using the victim's session and run scripts in the security context of the user and perform privilege escalation in case the victim has admin privileges when the victim access one of the HTML files present in the malicious Power BI template uploaded.

The security update addresses the vulnerability by helping to ensure that Power BI Report Server properly sanitize file uploads.

Source: NVD