CVE‑2018‑4063: Unrestricted File Upload in Sierra Wireless AirLink ALEOS Enables Remote Code Execution
What It Is – The ALEOS firmware allows an authenticated attacker to upload a file of any type via a crafted HTTP request. The uploaded file can be executed on the device’s web server, giving the attacker code execution capabilities.
Exploitability – Requires authentication but can be triggered remotely; proof‑of‑concept code is publicly available. CVSS v3.1 base score: 8.8 (High).
Affected Products – Sierra Wireless AirLink ALEOS routers (including end‑of‑life / end‑of‑service units).
Why It Matters for Trust & Control Assurance
- Vulnerability Management – Demonstrates the need for continuous discovery and patching of network‑edge devices to satisfy control objectives around timely remediation.
- Evidence of Due Diligence – Maintaining up‑to‑date firmware inventories and remediation tickets provides defensible audit evidence for frameworks that require documented vulnerability handling.
- Defensible Audit Trail – Automated logging of firmware version checks and patch deployments supports a trustworthy control posture demanded by enterprise buyers.
Recommended Actions
- Inventory all deployed ALEOS devices and verify their firmware version.
- Apply the latest Sierra Wireless security patch or replace EoL/EoS units with supported hardware.
- Update your vulnerability management system to flag this CVE and track remediation status.
- Capture remediation evidence (patch logs, change‑control records) for audit readiness.
Source: CISA KEV – CVE‑2018‑4063