CVE-2025-66603
CRITICAL
2026-02-09
7168b535-132a-4efe-a076-338f829b2eb9
9.8
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Feb 09, 2026 - 04:15 nvd
CRITICAL 9.8
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
Analysis
Yokogawa FAST/TOOLS has a second web server vulnerability involving improper cryptographic handling that weakens the security of SCADA communications.
Technical Context
CWE-358 improperly implemented security check for standard in Yokogawa FAST/TOOLS web server, the second vulnerability in the FAST/TOOLS advisory.
Affected Products
['Yokogawa FAST/TOOLS']
Remediation
Apply Yokogawa patches for both CVEs.
Priority Score
49
Low
Medium
High
Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: 0
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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