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  • Hubbell Aclara Metrum Cellular Web Interface

    From CISA Advisories@2:263/1 to All on Tue Jun 23 17:11:07 2026
    Hubbell Aclara Metrum Cellular Web Interface

    View CSAF
    Summary
    Successful exploitation of this vulnerability could allow attackers to manipulate critical device settings and repeatedly disrupt operations, potentially causing a loss of communications to the device.
    The following versions of Hubbell Aclara Metrum Cellular Web Interface are affected:

    Aclara Metrum Cellular Web Interface





    CVSS
    Vendor
    Equipment
    Vulnerabilities




    v3 7.5
    Hubbell
    Hubbell Aclara Metrum Cellular Web Interface
    Missing Authentication for Critical Function




    Background

    Critical Infrastructure Sectors: Energy
    Countries/Areas Deployed: United States
    Company Headquarters Location: United States


    Vulnerabilities

    Expand All +

    CVE-2026-1840

    The Aclara Metrum Cellular Web Interface is vulnerable to unauthorized access due to the absence of authentication controls on critical system functions. This weakness exposes essential configuration settings, allowing attackers to alter operational parameters and trigger system restarts without restriction. Such unauthorized changes can disrupt normal functionality and, if performed repeatedly, may lead to a loss of communications to the device.
    View CVE Details

    Affected Products
    Hubbell Aclara Metrum Cellular Web Interface

    Vendor:Hubbell
    Product Version:Hubbell Aclara Metrum Cellular Web Interface: <v2.1.0.105 Product Status:known_affected


    Remediations
    MitigationHubbell encourages users to update their firmware to v2.1.0.105 in order to minimize network exposure and ensure that devices are not accessible from the Internet. Users can download version 2.1.0.105 from: https://aclara.my.site.com/AclaraConnect/s/

    Relevant CWE: CWE-306 Missing Authentication for Critical Function

    Metrics




    CVSS Version
    Base Score
    Base Severity
    Vector String




    3.1
    7.5
    HIGH
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


    4.0
    8.7
    HIGH
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N








    Acknowledgments

    Abhirup Konwar 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.
    No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

    Revision History

    Initial Release Date: 2026-06-23




    Date
    Revision
    Summary




    2026-06-23
    1
    Initial Publication




    Legal Notice and Terms of Use

    https://www.cisa.gov/news-events/ics-advisories/icsa-26-174-07

    2026-06-23 12:00 UTC
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