An exploitable information disclosure vulnerability exists in the ACEManager template_load.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can cause a information leak, resulting in the disclosure of internal paths and files. An attacker can make an authenticated HTTP request to trigger this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0752
https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03