CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Jan 2, 2026
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.
Required Action
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
Vulnerability Overview
- Severity
- High
- CISA KEV
- Yes
- Ransomware
- Unknown
- Published
- Dec 12, 2025
- KEV Added
- Dec 12, 2025
- Due Date
- Jan 2, 2026
- Related Articles
- 0
Vendor
Sierra Wireless
AirLink ALEOS