Vulnerability Intelligence Report
Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
CVE-2018-4063
An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. 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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:28.06%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-434 ↗CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| sierrawireless | aleos | all |
| sierrawireless | airlink_es440 | all |
| sierrawireless | airlink_gx400 | all |
| sierrawireless | airlink_gx440 | all |
| sierrawireless | airlink_ls300 | all |
| sierrawireless | airlink_lx40 | all |
| sierrawireless | airlink_lx60 | all |
| sierrawireless | airlink_mp70 | all |
| sierrawireless | airlink_mp70e | all |
| sierrawireless | airlink_rv50 | all |
| sierrawireless | airlink_rv50x | all |
| sierrawireless | airlink_es450 | all |
| sierrawireless | airlink_gx450 | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Talos · Researcher · USA |
| Reserved | 2018-01-02T00:00:00 |
| Published | 2019-05-06T18:43:31 |
| Last Updated | 2026-05-22T13:18:19 |
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