What is CVE-2025-66594?

CVE-2025-66594 is a medium-severity vulnerability in Yokogawa Fast\/tools, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2026-02-09.

How severe is CVE-2025-66594?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Yokogawa Fast\/tools

CVE-2025-66594

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

EPSS: 0.002 (10.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Yokogawa Fast\/tools
Yokogawa Electric Corporation Fast/tools — versions R9.01

Weakness classification (CWE)

CWE-209 — Generation of Error Message Containing Sensitive Information

References

7168b535-132a-4efe-a076-338f829b2eb9 (Vendor Advisory)

Frequently asked questions

What is CVE-2025-66594?: CVE-2025-66594 is a medium-severity vulnerability in Yokogawa Fast\/tools, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2026-02-09.
How severe is CVE-2025-66594?: Medium severity. CVSS v3 base score is 5.3 out of 10.