# CVE-2025-66594

## Summary

- **CVE ID:** CVE-2025-66594
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-209
- **Published:** Feb 9, 2026
- **Last Modified:** Mar 13, 2026

## Description

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation.

Detailed messages are displayed on the error
page. This information could be exploited by an attacker for other attacks.



The
affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to
R10.04

## Affected Products

- Yokogawa Electric Corporation — FAST/TOOLS (R9.01)

## References

- [CNA](https://web-material3.yokogawa.com/1/39206/files/YSAR-26-0001-E.pdf)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._