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Vulnerability record · CVE-2018-17900 · published 12 October 2018

CVE-2018-17900: Yokogawa fcj firmware insufficiently protected credentials vulnerability

Yokogawa · Fcj Firmware

Yokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The web application improperly protects credentials which could allow an attacker to obtain credentials for remote access to controllers.

9.8 CVSS 3.0 Critical EPSS 1.9% · top 21.6% CWE-522 · Insufficiently protected credentials
9.8CVSS 3.0 base score, v2 5.0
1.9%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 web application improperly protects credentials which could allow an attacker to obtain credentials for remote access to controllers.

CVSS:3.0/AV:N/AC:L/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.

9.8CVE-2018-10592Yokogawa fcj firmware hard-coded credentials vulnerabilityYokogawa STARDOM FCJ controllers R4.02 and prior, FCN-100 controllers R4.02 and prior, FCN-RTU controllers R4.02 and prior, and FCN-500 controllers R…EPSS 6.9%8.1CVE-2018-17896Yokogawa fcj firmware hard-coded credentials vulnerabilityYokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The affected controllers utilize hard-coded credentials wh…EPSS 1.2%7.5CVE-2018-17898Yokogawa fcj firmware uncontrolled resource consumption vulnerabilityYokogawa STARDOM Controllers FCJ,FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The controller application fails to prevent memory exhausti…EPSS 1.3%5.3CVE-2018-17902Yokogawa fcj firmware vulnerabilityYokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The application utilizes multiple methods of session manag…EPSS 1.1%9.8CVE-2021-22681Rockwell Logix Designer authentication bypass via weak key verificationRockwell Automation Studio 5000 Logix Designer (v21+) and RSLogix 5000 (v16-20) rely on a key to verify that Logix controllers are talking to genuine…KEVEPSS 64%analysed9.8CVE-2021-30116Kaseya VSA credential disclosure via unauthenticated download pageKaseya VSA before 9.5.7 exposes an unauthenticated download page (dl.asp) that leaks agent credentials and accepts them via GET request. An attacker …KEVEPSS 86%analysed9.8CVE-2020-29583Zyxel USG and ATP firmware hard-coded admin credentialZyxel USG and ATP firmware version 4.60 ships an undocumented account (zyfwp) whose password is stored in cleartext in the firmware and cannot be cha…KEVEPSS 90%analysed9.8CVE-2017-9248Telerik UI for ASP.NET AJAX and Sitefinity cryptographic key protection flawTelerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX (before R2 2017 SP1) and Sitefinity (before 10.0.6412.0) fails to properly protect the Tel…KEVEPSS 75%analysed

Source: NIST National Vulnerability Database (record CVE-2018-17900), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.