CVE-2025-66603 PUBLISHED

Assigner: YokogawaGroup
Reserved: 05.12.2025 Published: 09.02.2026 Updated: 09.02.2026

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation.

The web server accepts the OPTIONS method. An attacker could potentially use this information to carry out other attacks.

The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 2.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	High	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Active

CVSS 4.0

Vendor	Yokogawa Electric Corporation
Product	FAST/TOOLS
Versions	Default: unknown affected from R9.01 to R10.04 (incl.)