CVE-2025-66603 Information disclosure in FAST/TOOLS
The web server accepts the OPTIONS method, potentially allowing attackers to gather information to facilitate further attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-66603?
CVE-2025-66603 is a low-severity vulnerability in Yokogawa Electric Corporation FAST/TOOLS, published on 9 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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
Weakness: CWE-358
Which versions are affected by CVE-2025-66603?
It affects 1 product.
Products include Yokogawa Fast\/Tools.
How do I fix CVE-2025-66603?
No fix has been published for CVE-2025-66603 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66603 being exploited?
There is no known exploitation of CVE-2025-66603 in the wild and no public exploit code.
Other vulnerabilities in Yokogawa Electric Corporation FAST/TOOLS
Sources
Also known as GHSA-g8q7-r3f2-x8cw.