CVE-2025-66603
Critical
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
SeverityCritical
CVSS9.8
Exploit probability—
ProductYokogawa Fast\/tools
PublishedFeb 9, 2026
First seenFeb 9, 2026
Weakness typeCWE-358CWE-358
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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