# CVE-2026-9854

## Summary

- **CVE ID:** CVE-2026-9854
- **Severity:** HIGH
- **CVSS Score:** 8.5 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-303
- **Published:** Sep 3, 2026
- **Last Modified:** Sep 3, 2026

## Description

A vulnerability exists in SYS600 RBAC mechanism where users having access to the engineering tools could elevate their privileges to administrator level on the underlying Windows host, granting themselves full control over the host machine.

## Affected Products

- Hitachi Energy — MicroSCADA SYS600 (10.0)

## References

- [CNA](https://publisher.hitachienergy.com/preview?DocumentID=8DBD000249&LanguageCode=en&DocumentPartId=&Action=Launch)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._