CVE-2018-4063 — Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability

Overview

Sierra Wireless AirLink ALEOS contains an unrestricted upload of file with dangerous type vulnerability. 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. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). User...

Vulnerability details

CVE ID

CVE-2018-4063

Vulnerability

Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability

Vendor

Sierra Wireless

Affected products

Sierra Wireless: AirLink ALEOS

Severity

HIGH

Exploitation status

Actively exploited in the wild (CISA KEV)

Published

2025-12-12

Remediation guidance

CVE-2018-4063 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.

Apply the vendor's official security update for Sierra Wireless the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.

Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.

Authoritative references

• NVD — National Vulnerability Database
• MITRE CVE Record
• CISA Known Exploited Vulnerabilities Catalog
• FIRST EPSS — Exploit Prediction Scoring