All vulnerabilities
CVE-2018-4063

Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability

Sierra Wireless AirLink ALEOS
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationExploited in the wildAdded to KEV 12 Dec 2025CISA KEV
Exploit odds (EPSS)27.3%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline2 Jan 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply 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

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 6 May 2019, 18:43 UTCPublishedCVE List
  2. 12 Dec 2025Added to CISA KEVCISA KEV

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.

Text from CVE List

Affected versions 1

  • Sierra Wirelessaffected: Sierra Wireless AirLink ES450 FW 4.9.3CVE List

References 8