Security readout for executives and security teams
Plain-English summary
These Echelon control devices may send management, configuration, and firmware data without encryption. Anyone able to reach those management channels could potentially observe or tamper with sensitive device administration traffic, creating serious operational risk in building automation or industrial control environments.
Executive priority
Treat this as a high-priority OT exposure review. The main business risk is unauthorized observation or tampering with device management and update traffic, which could affect building or control-system operations.
Technical view
CVE-2018-8855 is CWE-319: cleartext transmission of sensitive information. Affected devices allow unencrypted web connections by default and support configuration and firmware updates over insecure FTP. The CVSS 3.1 score is 9.8, with network attack vector and no privileges or user interaction required.
Likely exposure
Organizations using Echelon SmartServer 1, SmartServer 2 before 4.11.007, i.LON 100, or i.LON 600 are potentially exposed. Risk is highest where management interfaces or FTP update paths are reachable from enterprise, vendor, or internet-connected networks.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation evidence. The risk is still material because the issue involves unauthenticated network reachability and unencrypted management/update channels on operational devices.
Researcher notes
Evidence is limited to the CVE record and ICS-CERT advisory reference in the bundle. The affected list names SmartServer 2 before 4.11.007, but lists SmartServer 1, i.LON 100, and i.LON 600 as all versions affected.
Mitigation direction
- Inventory affected Echelon SmartServer and i.LON devices.
- For SmartServer 2, prioritize release 4.11.007 or later where applicable.
- For products listed as all versions affected, check vendor guidance for supported remediation.
- Restrict device management access to trusted administrative networks.
- Avoid transmitting configuration or firmware through untrusted networks.
- Segment affected operational devices from general enterprise traffic.
Validation and detection
- Confirm device model and firmware release for each deployed unit.
- Check whether management web access is reachable outside approved networks.
- Review whether configuration or firmware workflows use insecure FTP.
- Verify firewall rules limit access to trusted administrators only.
- Document compensating controls for devices with no sourced fixed version.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-319: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-8855 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://ics-cert.us-cert.gov/advisories/ICSA-18-200-03CVE reference, icscert · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cleartext Transmission of Sensitive Information
Cleartext Transmission of Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.