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CVE-2018-17900

30
FAUCET Score

CVE-2018-17900 describes a critical vulnerability in Yokogawa STARDOM Controllers (FCJ, FCN-100, FCN-RTU, FCN-500, all versions R4.10 and prior) where the web application improperly protects credentials. This allows an unauthenticated attacker to remotely obtain sensitive credentials. With a CVSS score of 9.8 (Critical), this vulnerability presents a high risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= r4.10CPE matchmatch criteria
cpe:2.3:o:yokogawa:fcj_firmware:*:*:*:*:*:*:*:*
<= r4.10CPE matchmatch criteria
cpe:2.3:o:yokogawa:fcn-100_firmware:*:*:*:*:*:*:*:*
<= r4.10CPE matchmatch criteria
cpe:2.3:o:yokogawa:fcn-rtu_firmware:*:*:*:*:*:*:*:*
<= r4.10CPE matchmatch criteria
cpe:2.3:o:yokogawa:fcn-500_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/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 Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 65th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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