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  • NAVTOR NavBox

    From CISA Advisories@2:263/1 to All on Thu Jun 4 16:11:08 2026
    NAVTOR NavBox

    View CSAF
    Summary
    Successful exploitation of this vulnerability could allow a local attacker to gain unauthorized access to SOAP methods, resulting in a disruption of operations.
    The following versions of NAVTOR NavBox are affected:

    NavBox 4.16.1.20 (CVE-2026-21404)





    CVSS
    Vendor
    Equipment
    Vulnerabilities




    v3 6.3
    NAVTOR
    NAVTOR NavBox
    Use of Hard-coded Credentials




    Background

    Critical Infrastructure Sectors: Information Technology
    Countries/Areas Deployed: Worldwide
    Company Headquarters Location: Norway


    Vulnerabilities

    Expand All +

    CVE-2026-21404

    NAVTOR NavBox through version 4.16.1.20 contains hard-coded credentials within its Windows Communication Foundation (SOAP) implementation. If the SOAP functionality is enabled, a local attacker can extract credentials to bypass the intended transfer workflow. Successful authentication against the SOAP interface grants access to privileged WCF methods, enabling an attacker to write or overwrite files within application-defined paths.
    View CVE Details

    Affected Products
    NAVTOR NavBox

    Vendor:NAVTOR
    Product Version:NAVTOR NavBox: 4.16.1.20
    Product Status:known_affected


    Remediations
    Vendor fixNAVTOR has released a patch for NavBox in April 2026. Version 4.17.2.6 and later includes the fix. Users that have an active NavBox connection will automatically be kept up to date with the latest version. No user action required.

    Relevant CWE: CWE-798 Use of Hard-coded Credentials

    Metrics




    CVSS Version
    Base Score
    Base Severity
    Vector String




    3.1
    6.3
    MEDIUM
    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H


    4.0
    5.8
    MEDIUM
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N








    Acknowledgments

    Cydome Security Ltd reported this vulnerability to CISA


    Legal Notice and Terms of Use
    This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

    Recommended Practices
    CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.
    Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
    Locate control system networks and remote devices behind firewalls and isolating them from business networks.
    When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
    CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
    CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
    CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
    Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
    Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
    CISA also recommends users take the following measures to protect themselves from social engineering attacks:
    Do not click web links or open attachments in unsolicited email messages.
    Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
    Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
    No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.

    Revision History

    Initial Release Date: 2026-06-04




    Date
    Revision
    Summary




    2026-06-04
    1
    Initial Publication




    Legal Notice and Terms of Use

    https://www.cisa.gov/news-events/ics-advisories/icsa-26-155-01

    2026-06-04 12:00 UTC
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