CVE-2025-66596
Medium · 6.1CVSS
6.1
EPSS
0.2%
Published
Feb 9, 2026
CISA due date
—
The record
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
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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