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Vulnerability record · CVE-2018-17896 · published 12 October 2018

CVE-2018-17896: Yokogawa fcj firmware hard-coded credentials vulnerability

Yokogawa · Fcj Firmware

Yokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The affected controllers utilize hard-coded credentials which may allow an attacker gain unauthorized access to the maintenance functions and obtain or modify information. This attack can be executed only during maintenance work.

8.1 CVSS 3.0 High EPSS 1.2% · top 32.6% CWE-798 · Hard-coded credentials
8.1CVSS 3.0 base score, v2 9.3
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Yokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The affected controllers utilize hard-coded credentials which may allow an attacker gain unauthorized access to the maintenance functions and obtain or modify information. This attack can be executed only during maintenance work.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://ics-cert.us-cert.gov/advisories/ICSA-18-151-03 Third Party AdvisoryUS Government Resource
https://web-material3.yokogawa.com/YSAR-18-0007-E.pdf Vendor Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-151-03 Third Party AdvisoryUS Government Resource
https://web-material3.yokogawa.com/YSAR-18-0007-E.pdf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-17896), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.