CVE-2018-4063
Sierra Wireless AirLink ALEOS contains an unrestricted upload of file with dangerous type vulnerability. A specially crafted HTTP request can upload…
Browse: All 2018 CVEs · All vendors
- CVSS score
- 8.8 High
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- CISA KEV
- Yes — actively exploited (added 2025-12-12, remediation due 2026-01-02)
- Weakness (CWE)
- CWE-434
- Published
- 2019-05-06
- Last modified
- 2026-06-17
- NVD status
- Analyzed
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.
Affected products
- sierrawireless aleos
Affected ranges per NVD CPE data; confirm exact versions in the vendor advisory.
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. Federal remediation deadline: 2026-01-02.
How to prioritize this
This vulnerability is on the CISA KEV list, meaning it is being actively exploited — treat it as urgent regardless of the raw CVSS number. Use the live CVE lookup for the latest NVD data, and the CVSS 3.1 calculator to model your own environmental score.
References
- http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html
- http://www.securityfocus.com/bid/108147
- https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063
- https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/
FAQ
Is CVE-2018-4063 actively exploited?
Yes. CISA added CVE-2018-4063 to its Known Exploited Vulnerabilities (KEV) catalog on 2025-12-12, with a federal remediation deadline of 2026-01-02. A KEV listing means real-world exploitation is confirmed, so patching this should be prioritized above many higher-CVSS bugs that aren't being exploited.
What is the CVSS score of CVE-2018-4063?
CVE-2018-4063 has a CVSS base score of 8.8 (High). Its vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
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Data source: NVD & CISA KEV. Shown as-is; nothing added. Last generated from NVD data — re-check the live tool for updates.
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