CVE-2025-66598

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product supports old SSL/TLS versions, 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

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:yokogawa:fast\/tools:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-09 05:16

Updated : 2026-03-06 20:25

NVD link : CVE-2025-66598

Mitre link : CVE-2025-66598

CVE.ORG link : CVE-2025-66598

JSON object : View

Products Affected

yokogawa

fast\/tools

CWE

CWE-327

Use of a Broken or Risky Cryptographic Algorithm

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