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An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability.

• http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html x_refsource_MISC
• https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03 x_refsource_MISC
• http://www.securityfocus.com/bid/108147 vdb-entryx_refsource_BID
• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748 x_refsource_MISC
• https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/ third-party-advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063 government-resource