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  • Rockwell Automation 1734 POINT IO

    From Cisa Advisories@2:263/1 to All on Tue Jul 21 18:03:06 2026
    Rockwell Automation 1734 POINT I/O

    View CSAF
    Summary
    Successful exploitation of this vulnerability could allow for an attacker to cause a denial-of-service condition on the product. The following versions of Rockwell Automation 1734 POINT I/O are affected:

    1734 POINT I/O 3.023





    CVSS
    Vendor
    Equipment
    Vulnerabilities




    v3 7.5
    Rockwell Automation
    Rockwell Automation 1734 POINT I/O
    Allocation of Resources Without Limits or Throttling




    Background

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


    Vulnerabilities

    Expand All +

    CVE-2026-10573

    A denial-of-service security issue exists in 1734 POINT I/O module. The security issue stems from improper handling of crafted CIP messages, which can cause the module to enter a faulted state. A restart is required to recover. View CVE Details

    Affected Products
    Rockwell Automation 1734 POINT I/O

    Vendor:Rockwell Automation
    Product Version:Rockwell Automation 1734 POINT I/O: 3.023 Product Status:known_affected


    Remediations
    MitigationRockwell Automation recommends users are to migrate to 5034-OB8. MitigationCustomers using the affected software, who are not able to upgrade to one of the corrected versions, should use Rockwell Automation's security best practices (https://support.rockwellautomation.com/app/answers/answer_view/a_id/ 1085012/loc/en_US#__highlight).https://support.rockwellautomation.com/app/answe
    rs/answer_view/a_id/1085012/loc/en_US#__highlight
    MitigationFor more information, see Rockwell Automation Security Advisories: https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html.
    https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html

    Relevant CWE: CWE-770 Allocation of Resources Without Limits or Throttling

    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

    Rockwell Automation 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.

    Revision History

    Initial Release Date: 2026-07-21




    Date
    Revision
    Summary




    2026-07-21
    1
    Initial Republication of Rockwell Automation Security Advisory




    Legal Notice and Terms of Use

    https://www.cisa.gov/news-events/ics-advisories/icsa-26-202-09

    2026-07-21 12:00 UTC

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    * Origin: LISTS. from TCOB1 READ ONLY (2:263/1)