CVE-2025-66596

MEDIUM

Yokogawa FAST/TOOLS R9.01-R10.04 - Open Redirect via Invalid Host Header

Title source: llm

Description

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

References (1)

Core 1

Core References

Various Sources

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

Scores

CVSS v3 6.1

EPSS 0.0015

EPSS Percentile 4.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-601

Status published

Products (1)

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

Published Feb 09, 2026

Tracked Since Feb 18, 2026