CVE entry · CVE-2018-4063
CVE-2018-4063: Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
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.
- Actively exploited: added to CISA’s KEV catalog on December 12, 2025.
- Use by ransomware: not established so far.
- Remediation deadline for US federal agencies: January 2, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes Sierra Wireless AirLink ALEOS, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
- Vendor advisory or reference cited by CISA (source.sierrawireless.com)
- Vendor advisory or reference cited by CISA (source.sierrawireless.com)
- NVD entry (NIST)
- CISA KEV catalog