Input validation error in Power BI Report Server - CVE-2026-21229

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Main Vulnerability Database Vulnerabilities #VU122561

Input validation error in Power BI Report Server - CVE-2026-21229

Published: February 10, 2026


Vulnerability identifier: #VU122561
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-21229
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Power BI Report Server

Detailed vulnerability description

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user can pass specially crafted input to the server and execute arbitrary code on the system.


How to mitigate CVE-2026-21229

Install updates from vendor's website.

Sources