Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-66596

Severity CVSS v4.0:
MEDIUM
Type:
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Publication date:
09/02/2026
Last modified:
09/02/2026

Description

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

Impact

Vector 4.0
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 CVSS v4.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): Low
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): Low
Availability (SA): None

Base Score 4.0
6.90
Severity 4.0
MEDIUM

References to Advisories, Solutions, and Tools