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CVE-2018-8855

CRITICAL

9.8

CVSS Score

Published: July 24, 2018 at 05:00 PM UTC

Updated: June 17, 2026 at 02:05 AM UTC

8 products affected across 1 vendorI.lon 600 FirmwareI.lon 100 FirmwareSmartserver 1 Firmware

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Severity

CRITICAL9.8

Exploit prediction

EPSS 0.8%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

I.lon 100 Firmware · Echelon

95%

All versions

echelon-i-lon-100 (same device)

I.lon 600 Firmware · Echelon

95%

All versions

echelon-i-lon-600 (same device)

Smartserver 1 Firmware · Echelon

95%

All versions

echelon-smartserver-1 (same device)

Smartserver 2 Firmware · Echelon

95%

v < 4.11.007all versions prior to release 4.11.007

Affected range stops below 4.11.007, so it looks safe — our inference, not a vendor statement

echelon-smartserver-2 (same device)

I.Lon 100 · Echelondevice

80%

All versions

I.Lon 600 · Echelondevice

80%

All versions

Smartserver 1 · Echelondevice

80%

All versions

Smartserver 2 · Echelondevice

80%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCThird Party AdvisoryUS Government Resource

Source: [email protected]

https://ics-cert.us-cert.gov/advisories/ICSA-18-200-03

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-319

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