CVE-2025-66606
Yokogawa Fast/tools vulnerability
- Published9 Feb 2026
Description
A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product does not properly encode URLs. An attacker could tamper with web pages or execute malicious scripts. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HAffected products
Remediation
No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.
Frequently asked
Is CVE-2025-66606 being actively exploited?
CVE-2025-66606 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.26%.
How severe is CVE-2025-66606?
CVE-2025-66606 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.26% probability of exploitation.
Which products are affected by CVE-2025-66606?
Affected products include Yokogawa Fast/tools.
How do I fix CVE-2025-66606?
Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2025-66606 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.