Is CVE-2018-8851 in the CISA KEV catalog?

No. CVE-2018-8851 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-8851?

CVE-2018-8851 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-8851?

CVE-2018-8851 has an EPSS score of 1.30% (67th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-8851?

Upgrade smartserver 2 firmware to 4.11.007 or later.

CVE & CISA-KEV Catalog

CVE-2018-8851

CRITICAL

9.8

CVSS v3

NVD

Description

Echelon SmartServer 1 all versions, SmartServer 2 all versions prior to release 4.11.007, i.LON 100 all versions, and i.LON 600 all versions. The devices store passwords in plaintext, which may allow an attacker with access to the configuration file to log into the SmartServer web user interface.

CWE-256 CWE-522

How to fix

Remediation Available

smartserver 2 firmwareNVD

Affected:< 4.11.007Fixed in:4.11.007CVE-2018-8851derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.30%probability of exploitation in 30 days

67thpercentile

Moderate risk: more likely to be exploited than 67% of all known CVEs.

References

Third-Party Advisory1

ics-cert.us-cert.gov

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-02.