CVE-2025-66603
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OPTIONS Method Exposure in Yokogawa FAST/TOOLS Web Server

Publication date: 2026-02-09

Last updated on: 2026-03-05

Assigner: YokogawaGroup

Description
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

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Meta Information

Published
2026-02-09
Last Modified
2026-03-05
Generated
2026-07-06
AI Q&A
2026-02-09
EPSS Evaluated
2026-07-05
NVD
CVE-2025-66603
EUVD
EUVD-2025-207170

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
yokogawa fast/tools From r9.01 (inc) to r10.04 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-358 The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in the FAST/TOOLS software provided by Yokogawa Electric Corporation. The web server component of the software accepts the HTTP OPTIONS method. An attacker could potentially use the information revealed by this method to facilitate other attacks.

Impact Analysis

The vulnerability allows an attacker to gain information from the web server by using the OPTIONS method. While the direct impact is low (as indicated by the CVSS base score of 2.1), this information could be leveraged by an attacker to carry out further attacks against the system.

Compliance Impact

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