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CVE-2021-26859

No known exploitation. EPSS puts it in the 89th percentile. Fixed versions are out.

CVSS 3.17.7HighEPSS percentile89th3.4% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix3 products2 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft Power BI Report Server version 15.0.1103.234Affected: ≥ 15.0.0.0, < 1.8.7485.35104Upgrade to: 1.8.7485.35104Stated by: CVE record
  • Microsoft Power BI Report Server version 15.0.1104.300Affected: ≥ 15.0.0.0, < 1.9.7675.15620Upgrade to: 1.9.7675.15620Stated by: CVE record
  • Microsoft Corp Power BI Report ServerAffected: 15.0.1103.234Upgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

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What it is

From the CVE record

Microsoft Power BI Information Disclosure Vulnerability

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS89th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

3.4% chance of exploitation activity in the next 30 days, which ranks it in the 89th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

6 events over 1987 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Patch availablerecord updated
  3. Publishedweakness classified

Affected products

And 1 more affected product. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Scored 7.7 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

Sources

References in the record

And 1 more reference. See all after sign-in

Watch the software you run.

My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.

We'll flag the next CVE, public exploit or patch for Power BI Report Server, not every advisory.