Actively exploited in the wild
Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
Sierra Wireless - AirLink ALEOS · Listed in the CISA KEV since 2025-12-12. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CVE-2018-4063
HighCVSS 8.8KEVSummary
A remote code execution vulnerability in the upload.cgi functionality of Sierra Wireless AirLink ES450 (FW 4.9.3). A specially crafted HTTP request can upload a file that can be executed on the webserver.
Risk Assessment
An authenticated attacker can upload a malicious file and execute code on the device, potentially leading to device compromise.
Recommendation
Update the device firmware to the latest version or apply available security patches.
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Original NVD description (English source)
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.