CVE-2025-66598

HIGH

FAST/TOOLS <10.04 - Info Disclosure

Title source: llm

Description

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product supports old SSL/TLS versions, potentially allowing an attacker to decrypt communications with the web server. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

References (1)

[Various Sources] https://web-material3.yokogawa.com/1/39206/files/YSAR-26-0001-E.pdf

Scores

CVSS v3 7.5

EPSS 0.0001

EPSS Percentile 3.1%

Attack Vector NETWORK

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

Classification

CWE

CWE-327

Status published

Affected Products (1)

yokogawa/fast\/tools < r10.04

Timeline

Published Feb 09, 2026

Tracked Since Feb 18, 2026