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  • Rockwell Automation Logix 5370 & 5570 Controllers Vulnerable To Denial

    From CISA Advisories@2:263/1 to All on Tue Jun 16 17:11:05 2026
    Rockwell Automation Logix 5370 & 5570 Controllers Vulnerable To Denial of Service Via CIP

    View CSAF
    Summary
    Successful exploitation of this vulnerability could cause a denial-of-service condition that may result in a major nonrecoverable fault (MNRF).
    The following versions of Rockwell Automation Logix 5370 & 5570 Controllers Vulnerable To Denial of Service Via CIP are affected:

    CompactLogix 5370 <=34.016 (CVE-2026-11317)
    Compact GuardLogix 5370 <=35.015 (CVE-2026-11317)
    ControlLogix 5570 <=35.015 (CVE-2026-11317)
    GuardLogix 5570 36.012 (CVE-2026-11317)





    CVSS
    Vendor
    Equipment
    Vulnerabilities




    v3 7.5
    Rockwell Automation
    Rockwell Automation Logix 5370 & 5570 Controllers Vulnerable To Denial of Service Via CIP
    Improper Resource Shutdown or Release




    Background

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


    Vulnerabilities

    Expand All +

    CVE-2026-11317

    A denial of service security issue exists in the affected product. The security issue stems from a fault occurring when a crafted CIP message is sent. Devices with less memory are more likely to be affected. This can result in a major nonrecoverable fault (MNRF). A program download is required to recover.
    View CVE Details

    Affected Products
    Rockwell Automation Logix 5370 & 5570 Controllers Vulnerable To Denial of Service Via CIP

    Vendor:Rockwell Automation
    Product Version:Rockwell Automation CompactLogix 5370: <=34.016, Rockwell Automation Compact GuardLogix 5370: <=35.015, Rockwell Automation ControlLogix 5570: <=35.015, Rockwell Automation GuardLogix 5570: 36.012
    Product Status:known_affected


    Remediations
    Vendor fixRockwell Automation recommends users to update to the following versions: CompactLogix 5370: Versions 34.016 and later
    Vendor fixCompact GuardLogix 5370: Versions 35.015 and later
    Vendor fixControlLogix 5570: Versions 36.012 and later
    Vendor fixGuardLogix 5570: Versions 37.011 and later
    MitigationFor more information, see Rockwell Automation Security Advisory SD1772 (https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1772.html)https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1772.html

    Relevant CWE: CWE-404 Improper Resource Shutdown or Release

    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: 2026-06-16




    Date
    Revision
    Summary




    2026-06-16
    1
    Initial Republication of Rockwell Automation Security Advisory SD1772




    Legal Notice and Terms of Use

    https://www.cisa.gov/news-events/ics-advisories/icsa-26-167-03

    2026-06-16 12:00 UTC
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