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). Users should discontinue product utilization.
https://www.cisa.gov/news-events/ics-advisories/icsa-19-122-03 ; https://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2019-003 ; https://source.sierrawireless.com/resources/airlink/hardware_reference_docs/airlink_es450_eol ; https://nvd.nist.gov/vuln/detail/CVE-2018-4063
Key Details
| Property | Value |
|---|
| CVE ID |
CVE-2018-4063 |
| Vendor / Product |
Sierra Wireless — AirLink ALEOS |
| NVD Published | 2019-05-06 |
| NVD Last Modified | 2025-12-15 |
| CVSS 3.1 Score | 8.8 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Severity | HIGH |
| CWE |
CWE-434
|
| CISA KEV Added | 2025-12-12 |
| CISA KEV Deadline | 2026-01-02 |
| Known Ransomware Use |
No |
Required Action
CISA BOD 22-01 Deadline: 2026-01-02.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|
| 2025-12-12 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2026-01-02 | CISA BOD 22-01 remediation deadline |