Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-21229

CVE-2026-21229HIGH

Microsoft Power BI Report Server — Power BI Remote Code Execution Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  H  H    8.8   .0096   60.1     —

AFFECTED
  Product                 Versions  Fixed
  Power BI Report Server  1.6.0 –   —

TIMELINE
  Dec 11  Reserved by microsoft
  Feb 10  Published (CNA: microsoft)
  Aug 19  RESCORED — CVE-2026-21229 (Microsoft Power BI Report Server). CVSS 8 → 8.8 (NVD).

CWE-20 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

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

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
December 11, 2025	Reserved	Reserved by microsoft
February 10, 2026	Published	Published (CNA: microsoft)
August 19, 2026	RESCORED	RESCORED — CVE-2026-21229 (Microsoft Power BI Report Server). CVSS 8 → 8.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Power BI Report Server	—	1.6.0	—

Weaknesses

CWE-20

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21229 [Vendor Advisory]

Authoritative record: CVE-2026-21229 at cve.org

Vendors: microsoft

Weaknesses: CWE-20

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-21229 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.