CVE-2025-66597
High
Description
A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product supports weak cryptographic algorithms, 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
SeverityHigh
CVSS7.5
Exploit probability—
ProductYokogawa Fast\/tools
PublishedFeb 9, 2026
First seenFeb 9, 2026
Weakness typeCWE-327CWE-327
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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