CVE-2018-4063: Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
Affects Sierra Wireless AirLink ALEOSSource CISA KEV
No CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 12/12/2025
- KEV deadline
- 01/02/2026
- EPSS
- 27.3% chance of exploitation in 30 days – higher than 98% of CVEs
What to do
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- cisa.gov/news-events/ics-advisories/icsa-19-122-03 (opens in a new tab)
- source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2019-003 (opens in a new tab)
- source.sierrawireless.com/resources/airlink/hardware_reference_docs/airlink_es450_eol (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2018-4063 (opens in a new tab)
Description
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.
Weaknesses
References
- cisa.gov/news-events/ics-advisories/icsa-19-122-03 (opens in a new tab)
- source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2019-003 (opens in a new tab)
- source.sierrawireless.com/resources/airlink/hardware_reference_docs/airlink_es450_eol (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2018-4063 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?search=CVE-2018-4063 (opens in a new tab)