How severe is CVE-2018-17896?

CVE-2018-17896 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-17896 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17896?

CVE-2018-17896 primarily affects Yokogawa Fcj Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-17896?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-17896 published?

CVE-2018-17896 was published on 2018-10-12 and last updated on 2026-06-17.

CVE-2018-17896

CVE-2018-17896 is a high-severity vulnerability in Yokogawa Fcj Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Yokogawa Fcj Firmware
Published: 2018-10-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-17896?: 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.
How severe is CVE-2018-17896?: CVE-2018-17896 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-17896 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17896?: CVE-2018-17896 primarily affects Yokogawa Fcj Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-17896?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-17896 published?: CVE-2018-17896 was published on 2018-10-12 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:yokogawa:fcj_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:fcn-100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:fcn-rtu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:fcn-500_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Yokogawa Fcj Firmware

CVE-2018-17900 — Critical (CVSS 9.8): Yokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The web application…
CVE-2018-10592 — Critical (CVSS 9.8): Yokogawa STARDOM FCJ controllers R4.02 and prior, FCN-100 controllers R4.02 and prior, FCN-RTU controllers R4.02 and…
CVE-2018-17898 — High (CVSS 7.5): Yokogawa STARDOM Controllers FCJ,FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The controller application…
CVE-2018-17902 — Medium (CVSS 5.3): Yokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The application utilizes…

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