CVE-2018-4063

Description

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.

Scoring

• CVSS: 8.8 (HIGH, 3.1)
• EPSS exploitation probability: Not yet available
• EPSS percentile: Not yet available

CISA KEV status

• Added to KEV: 2025-12-12
• Remediation due date: 2026-01-02
• Known ransomware campaign use: Unknown

Weakness types (CWE)

• CWE-434
• CWE-434

References

• http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html
• 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
• http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html
• 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/

More from Sierra Wireless

• No other tracked CVEs for this vendor yet.