CVE-2018-8859: Echelon I.lon 100 Firmware

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

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. An attacker can bypass the required authentication specified in the security configuration file by including extra characters in the directory name when specifying the directory to be accessed. This vulnerability does not affect the i.LON 600 product.

Affected products

• Echelon I.lon 100 Firmware: affected versions not specified
• Echelon I.lon 600 Firmware: affected versions not specified
• Echelon Smartserver 1 Firmware: affected versions not specified
• Echelon Smartserver 2 Firmware: before 4.11.007 (fixed in 4.11.007)

Published 2018-07-24. Last modified 2026-06-17.