How severe is CVE-2018-16590?

CVE-2018-16590 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-2018-16590 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16590?

CVE-2018-16590 primarily affects Furuno Felcom 250 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-16590?

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-2018-16590 published?

CVE-2018-16590 was published on 2018-09-06 and last updated on 2026-06-17.

CVE-2018-16590

CVE-2018-16590 is a critical-severity vulnerability in Furuno Felcom 250 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Furuno Felcom 250 Firmware
Published: 2018-09-06
Last modified: 2026-06-17

Description

FURUNO FELCOM 250 and 500 devices use only client-side JavaScript in login.js for authentication.

Frequently asked questions

What is CVE-2018-16590?: FURUNO FELCOM 250 and 500 devices use only client-side JavaScript in login.js for authentication.
How severe is CVE-2018-16590?: CVE-2018-16590 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-2018-16590 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16590?: CVE-2018-16590 primarily affects Furuno Felcom 250 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-16590?: 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-2018-16590 published?: CVE-2018-16590 was published on 2018-09-06 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:furuno:felcom_250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:furuno:felcom_500_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Furuno Felcom 250 Firmware

CVE-2018-16705 — Critical (CVSS 9.8): FURUNO FELCOM 250 and 500 devices allow unauthenticated access to the xml/permission.xml file containing all of the…
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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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