CVE-2025-66597

HIGH

Yokogawa Electric Corporation 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 weak cryptographic algorithms, 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 0.0002

EPSS Percentile 5.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-327

Status published

Products (1)

yokogawa/fast\/tools r9.01 - r10.04

Published Feb 09, 2026

Tracked Since Feb 18, 2026