Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2018-4063)
Severity: high · Patch status: unknown · Since 2025-12-12 · CVE-2018-4063
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). Users should discontinue product utilization. CISA added CVE-2018-4063 to its Known Exploited Vulnerabilities catalog on Dec 12, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jan 2, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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