Is CVE-2018-8855 in the CISA KEV catalog?

No. CVE-2018-8855 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-8855?

CVE-2018-8855 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-8855?

CVE-2018-8855 has an EPSS score of 0.83% (53th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-8855?

Upgrade smartserver 2 firmware to 4.11.007 or later.

CVE & CISA-KEV Catalog

CVE-2018-8855

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 allow unencrypted Web connections by default, and devices can receive configuration and firmware updates by unsecure FTP.

CWE-319

How to fix

Remediation Available

smartserver 2 firmwareNVD

Affected:< 4.11.007Fixed in:4.11.007CVE-2018-8855derived 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

0.83%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

Third-Party Advisory1

ics-cert.us-cert.gov

Related Vulnerabilities

Other CWE-319 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-12710	High	8.0	77%	-	-
CVE-2024-25735	Critical	9.1	51%	-	Fix
CVE-2019-3993	High	7.5	46%	-	-
CVE-2017-5259	High	8.8	39%	-	-
CVE-2016-5649	Critical	9.8	27%	-	-
CVE-2021-39341	High	8.2	23%	-	-

Embed a live status badge for CVE-2018-8855

Markdown

[![CVE-2018-8855](https://tridentstack.com/cve/badge/CVE-2018-8855.svg)](https://tridentstack.com/cve/CVE-2018-8855)

HTML

<a href="https://tridentstack.com/cve/CVE-2018-8855"><img src="https://tridentstack.com/cve/badge/CVE-2018-8855.svg" alt="CVE-2018-8855"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.