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CVE-2018-17896

25
FAUCET Score

CVE-2018-17896 describes a critical vulnerability in Yokogawa STARDOM Controllers (FCJ, FCN-100, FCN-RTU, FCN-500, all versions R4.10 and prior) where hard-coded credentials allow unauthorized access to maintenance functions. With a CVSS score of 8.1 (High), this vulnerability allows an attacker to gain full control over the system, including obtaining or modifying information, but only during maintenance operations. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

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

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 26th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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