CVE-2026-65811: CWE-20: Improper Input Validation in Microsoft Power BI Report Server
Improper input validation in Power BI allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-65811) in Microsoft Power BI Report Server version 1.6.0 is caused by improper input validation (CWE-20). It enables an attacker with authorized access to execute arbitrary code remotely over the network. The CVSS 3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected Power BI Report Server, potentially leading to full compromise of the system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided by Microsoft for Power BI Report Server version 1.6.0 as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65811.
CVE-2026-65811: CWE-20: Improper Input Validation in Microsoft Power BI Report Server
Description
Improper input validation in Power BI allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 8.8high
Affected software
pkg:nuget/Microsoft/powerbi.reportserverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-65811) in Microsoft Power BI Report Server version 1.6.0 is caused by improper input validation (CWE-20). It enables an attacker with authorized access to execute arbitrary code remotely over the network. The CVSS 3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected Power BI Report Server, potentially leading to full compromise of the system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided by Microsoft for Power BI Report Server version 1.6.0 as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65811.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-22T21:36:47.630Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65811","vendor":"Microsoft"}]
Threat ID: 6a7b5833bf8831d5391564d3
Added to database: 08/11/2026, 17:13:23 UTC
Last enriched: 08/11/2026, 19:29:18 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
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