CVE-2018-8859 Auth bypass in SmartServer 1

Critical 9.8 Published 24 Jul 2018 Updated 2 Jun 2026

Attackers can bypass authentication in Echelon SmartServer and i.LON devices by manipulating directory names, requiring upgrades to secure versions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-8859?

CVE-2018-8859 is a critical authentication bypass vulnerability in Echelon SmartServer 1, published on 24 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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. 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.

Weakness: CWE-287, CWE-288

Which versions are affected by CVE-2018-8859?

It affects 4 products.

Products include Echelon I.lon 100 Firmware, Echelon I.lon 600 Firmware, Echelon Smartserver 1 Firmware, Echelon Smartserver 2 Firmware.

How do I fix CVE-2018-8859?

No fix has been published for CVE-2018-8859 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2018-8859 being exploited?

There is no known exploitation of CVE-2018-8859 in the wild and no public exploit code.

Sources

Also known as GHSA-fvc7-qrrw-9pwh.