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

published 2026-02-09 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-207167

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

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

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-041-01 updated 2026-02-10 cvss 7.5

Yokogawa FAST/TOOLS

Yokogawa FAST/TOOLS >=R9.01, <=R10.04
affected: mitigation “Yokogawa recommends users update to revision R10.04 and apply patch software (CS_e12787). After the patch is applied, users should apply R10.04 SP3.” contact.yokogawa.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 8 mo ago (2026-02-09)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/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
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Yokogawa Electric Corporation FAST/TOOLS

Classification

Weakness

CWE-29 Path Traversal: '\..\filename'

References

web-material3.yokogawa.com /1/39206/files/YSAR-26-0001-E.pdf
vendor-advisory

Sources

CVE List CVE-2025-66608
NVD CVE-2025-66608

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Summary