CVE-2025-66596 MEDIUM

CVE-2025-66596

Vendor Yokogawa Electric Corporation
Product FAST/TOOLS
Weakness CWE-601 · Open redirect
Published February 9, 2026
Last update February 9, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

What the vulnerability does

01Description

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product does not properly validate request headers. When an attacker inserts an invalid host header, users could be redirected to malicious sites. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

Key dates

02Disclosure timeline

February 9, 2026 CVE published
February 9, 2026 Record updated

Related vulnerabilities

04Related CVE