CVE-2018-4063

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.

Score

CVSS 3.1 8.8 High

Status

Analyzed - talos-cna@cisco.com

Published

2019-05-06

Last modified

2026-05-22

Known exploited (CISA KEV)

since 2025-12-12, action due 2026-01-02: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

CWE-434

Affected products

• Aleos (Sierrawireless)

References

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