Oct 19, 2026 · 14:11 UTC SEARCH
UNRATED KNOWN EXPLOITED
Vulnerability intelligence

CVE-2018-4063

VendorSierra Wireless
ProductAirLink ALEOS
Known exploitedYes
Added to CISA KEVDecember 12, 2025
KEV due dateJanuary 2, 2026
Known ransomware useNot identified by CISA

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

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 KEV status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities Catalog. Known ransomware campaign use: Unknown.

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