CVE-2025-66608 Path traversal in FAST/TOOLS

High 8.7 Published 9 Feb 2026 Updated 9 Feb 2026

Attackers can steal files from the web server via improper URL validation in Yokogawa FAST/TOOLS industrial software.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-66608?

CVE-2025-66608 is a high-severity path traversal vulnerability in Yokogawa Electric Corporation FAST/TOOLS, published on 9 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation.

This product does not properly validate URLs. An attacker could send specially crafted requests to steal files from the web server.

The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

Weakness: CWE-29

Which versions are affected by CVE-2025-66608?

It affects 1 product.

Products include Yokogawa Fast\/Tools.

How do I fix CVE-2025-66608?

No fix has been published for CVE-2025-66608 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2025-66608 being exploited?

There is no known exploitation of CVE-2025-66608 in the wild and no public exploit code.

Sources

Also known as GHSA-mq2p-w6p2-6mrv.