CVE-2018-4063Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
Known exploited — Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
CISA confirmed this vulnerability is used in real attacks on 12.12.2025. Remediation deadline for US federal agencies: 02.01.2026.
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. 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
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| sierrawireless | aleos | < 4.4.9 | |
| — | Sierra Wireless | Sierra Wireless AirLink ES450 FW 4.9.3 |
References and patches
- http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-E… ExploitVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03 Third Party AdvisoryUS Government Resource
- 108147 vdb-entryBroken Link
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748 ExploitThird 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/ ExploitThird Party Advisory
CPE matches (NVD) (3)
cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*< 4.4.9cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*< 4.11.0cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*< 4.9.4