An exploitable command injection vulnerability exists in the ACEManager iplogging.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can inject arbitrary commands, resulting in arbitrary command execution. An attacker can send an authenticated HTTP request to trigger this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0746
https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03