CVE-2025-66596
MEDIUM EPSS 4.9%
Published Feb 9, 20264mo ago · Modified Jun 17, 20261w ago
6.9 CVSS 4.0
Published Feb 9, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago
Description
A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product does not properly validate request headers. When an attacker inserts an invalid host header, users could be redirected to malicious sites. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
4.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-601
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| yokogawa | fast\/tools | * | ≥r9.01 – ≤r10.04 |
References 1
- web-material3.yokogawa.com https://web-material3.yokogawa.com/1/39206/files/YSAR-26-0001-E.pdf
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.