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CVE-2025-66603

Published: Feb 9, 2026Updated: Mar 5, 2026 Sources: CVE List NVD BDU csafCWE-358
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.3%
Top 82.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-358

Affected Products

fast\/toolsyokogawaICS / OT / IoT
FAST/TOOLSYokogawa Electric CorporationICS / OT / IoT
yokogawacommercialJPICS / OT / IoTaka yokogawa electric corporation
yokogawa electric corporationcommercialJPICS / OT / IoTaka yokogawa

Exploitability

Official Patch Available

References

https://web-material3.yokogawa.com/1/39206/files/YSAR-26-0001-E.pdf
web-material3.yokogawa.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-041-01.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-26-041-01
cisa.gov
and 54 more references View all →

Timeline

Published
Feb 9, 2026
Last Updated
Mar 5, 2026

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