What is CVE-2026-21229?

CVE-2026-21229 is a high-severity vulnerability in Microsoft Power Bi Report Server, classified under Improper Input Validation. CVSS score: 8.0/10. Published 2026-02-10.

How severe is CVE-2026-21229?

High severity. CVSS v3 base score is 8.0 out of 10.

Improper input validation in Microsoft Power Bi Report Server

CVE-2026-21229

Improper input validation in Power BI allows an authorized attacker to execute code over a network.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.009 (55.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Power Bi Report Server — versions 1.6.0
Microsoft Power_bi_report_server

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21229?: CVE-2026-21229 is a high-severity vulnerability in Microsoft Power Bi Report Server, classified under Improper Input Validation. CVSS score: 8.0/10. Published 2026-02-10.
How severe is CVE-2026-21229?: High severity. CVSS v3 base score is 8.0 out of 10.