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    CVE-2018-4063

    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.

    Published:May 6, 2019
    Last Modified:Dec 15, 2025
    EPS:May 6, 2019
    EPSS Score:0.04294
    CVSS Score:8.8

    CISA Notification

    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.

    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.

    Notes:

    No extra notes provided.

    Due Date
    Jan 2, 2026
    252 days ago
    Alert Date
    Dec 12, 2025
    273 days ago

    Affected Products

    Vendor
    Sierrawireless
    Product
    Airlink Es440
    Vendor
    Sierrawireless
    Product
    Airlink Es450
    Vendor
    Sierrawireless
    Product
    Airlink Gx400
    Vendor
    Sierrawireless
    Product
    Airlink Gx440
    Vendor
    Sierrawireless
    Product
    Airlink Gx450
    Vendor
    Sierrawireless
    Product
    Airlink Ls300
    Vendor
    Sierrawireless
    Product
    Airlink Lx40
    Vendor
    Sierrawireless
    Product
    Airlink Lx60
    Vendor
    Sierrawireless
    Product
    Airlink Mp70
    Vendor
    Sierrawireless
    Product
    Airlink Mp70e
    Vendor
    Sierrawireless
    Product
    Airlink Rv50
    Vendor
    Sierrawireless
    Product
    Airlink Rv50x
    Vendor
    Sierrawireless
    Product
    Aleos

    Exploits

    http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.htmlhttps://talosintelligence.com/vulnerability_reports/TALOS-2018-0748http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.htmlhttps://talosintelligence.com/vulnerability_reports/TALOS-2018-0748https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High