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

CISA Known Exploited Vulnerabilities

Name

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

Vendor

Sierra Wireless

Product

AirLink ALEOS

Added to the catalog

2025-12-12

Due date for US federal agencies

2026-01-02

Weaknesses

CWE-434

Catalog version

2026.10.30

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 (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://www.cisa.gov/news-events/ics-advisories/icsa-19-122-03
• https://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2019-003
• https://source.sierrawireless.com/resources/airlink/hardware_reference_docs/airlink_es450_eol
• https://nvd.nist.gov/vuln/detail/CVE-2018-4063

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2019-05-06T19:29:00.637

Last modified

2026-06-17T01:58:18.623

Weaknesses

CWE-434

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.

References

• http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html (Exploit, VDB Entry)
• http://www.securityfocus.com/bid/108147 (Broken Link)
• https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03 (Third Party Advisory, US Government Resource)
• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748 (Exploit, Third Party Advisory)
• http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html (Exploit, VDB Entry)
• http://www.securityfocus.com/bid/108147 (Broken Link)
• https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03 (Third Party Advisory, US Government Resource)
• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748 (Exploit, Third Party Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063 (US Government Resource)
• https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/ (Exploit, Third Party Advisory)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:43.468Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2018-4063

CVE record

Assigner

talos

State

PUBLISHED

Published

2019-05-06T18:43:31.000Z

Updated

2026-05-22T13:18:19.359Z

Problem types

remote code execution

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.

References

• 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
• 108147
• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748

Read on 2026-11-03T00:36:52.334Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2018/4xxx/CVE-2018-4063.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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