How severe is CVE-2018-17900?

CVE-2018-17900 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-17900 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17900?

CVE-2018-17900 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-2018-17900?

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

When was CVE-2018-17900 published?

CVE-2018-17900 was published on 2018-10-12 and last updated on 2026-06-17.

CVE-2018-17900

CVE-2018-17900 is a critical-severity vulnerability in Yokogawa Fcj Firmware with a CVSS 3.x base score of 9.8. 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-522.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
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 web application improperly protects credentials which could allow an attacker to obtain credentials for remote access to controllers.

Frequently asked questions

What is CVE-2018-17900?: 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.
How severe is CVE-2018-17900?: CVE-2018-17900 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-17900 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17900?: CVE-2018-17900 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-2018-17900?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-17900 published?: CVE-2018-17900 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-2018-10592 — 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-2018-17896 — High (CVSS 8.1): Yokogawa STARDOM Controllers FCJ, FCN-100, FCN-RTU, FCN-500, All versions R4.10 and prior, The affected controllers…
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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CVE-2024-51545 — Critical (CVSS 10.0): Username Enumeration vulnerabilities allow access to application level username add, delete, modify and list…
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