# CVE-2018-4063: Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability

> CVE-2018-4063: Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2018-4063
Last updated: 2026-05-22T13:18:19Z

- Published: 2019-05-06 18:43 UTC · Updated: 2026-05-22 13:18 UTC · Assigner: talos
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 27.3%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-12-12, federal due date 2026-01-02, ransomware use: Unknown

## Description

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 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.

## Affected vendors and products

- n/a: Sierra Wireless

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-4063)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2018-4063)
- [http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html](http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html)
- [https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03](https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03)
- [https://talosintelligence.com/vulnerability\_reports/TALOS-2018-0748](https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748)
- [http://www.securityfocus.com/bid/108147](http://www.securityfocus.com/bid/108147)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2018-4063 · Markdown: https://rewindex.com/cve/CVE-2018-4063.md · JSON: https://rewindex.com/api/v1/cves/CVE-2018-4063 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:17.224Z