CVE-2025-66596
Medium
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
SeverityMedium
CVSS6.1
Exploit probability—
ProductYokogawa Fast\/tools
PublishedFeb 9, 2026
First seenFeb 9, 2026
Weakness typeCWE-601Open redirect
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| yokogawa fast\/tools | r9.01 ≤ v ≤ r10.04 | — |
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