[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fGuZP_xUo_a_DyWipAnBHttnR7cDGdBqStKW1vXv35Ss":3},{"article":4,"iocs":44,"watch_terms":45,"solutions":46,"lesson":135},{"id":5,"title":6,"slug":7,"summary":8,"ai_summary":9,"brief":10,"url":11,"image_url":12,"published_at":13,"ingested_at":14,"relevance_score":15,"entities":16,"category_id":27,"category":28,"article_tags":31},"01024e88-9cd5-43a2-a90b-b1b7cc4a6fb1","Rockwell Automation CompactLogix 5380 ControlLogix 5580 \u002F 1756-EN4TR Communications Module","rockwell-automation-compactlogix-5380-controllogix-5580-1756-en4tr-communication-eac09c","View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. The following versions of Rockwell Automation CompactLogix 5380 ControlLogix 5580 \u002F 1756-EN4TR Communications Module are affected: ControlLogix 5580 >=V36| =V36| =V36| =V36| =V36| =V36| =V36| =V36|\u003C=V37, Rockwell Automation 1756-EN4TR: V6.001, Rockwell Automation 1756-EN4TR: V7.001 Product Status: known_affected Remediations Vendor fix Rockwell Automation recommend users update to the following versions: ControlLogix 5580: Update to V38.011 Vendor fix CompactLogix 5380: Update to V38.011 Vendor fix GuardLogix 5580: Update to V38.011 Vendor fix Compact GuardLogix 5380: Update to V38.011 Vendor fix 1756-EN4TR: Update to V8.001 Relevant CWE: CWE-299 Improper Check for Certificate Revocation Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.9 MEDIUM CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:N\u002FA:N 4.0 8.2 HIGH CVSS:4.0\u002FAV:N\u002FAC:H\u002FAT:P\u002FPR:N\u002FUI:N\u002FVC:H\u002FVI:N\u002FVA:N\u002FSC:N\u002FSI:N\u002FSA:N Acknowledgments Rockwell Automation reported this vulnerability to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https:\u002F\u002Fwww.cisa.gov\u002Fnotification) and this Privacy & Use policy (https:\u002F\u002Fwww.cisa.gov\u002Fprivacy-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\u002For 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\u002Fics. 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\u002Fics 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: 2026-07-30 Date Revision Summary 2026-07-30 1 Initial Publication Legal Notice and Terms of Use","A denial-of-service vulnerability has been identified in Rockwell Automation's CompactLogix 5380, ControlLogix 5580, and 1756-EN4TR Communications Module. Successful exploitation could allow an attacker to disrupt operations. Rockwell Automation has released patches, recommending users update to specific newer versions to mitigate the risk.","Rockwell Automation ICS products affected by a DoS vulnerability, patches available.","https:\u002F\u002Fwww.cisa.gov\u002Fnews-events\u002Fics-advisories\u002Ficsa-26-211-05",null,"2026-07-30T12:00:00+00:00","2026-07-30T18:01:22.538638+00:00",8,[17,20,23,25],{"name":18,"type":19},"Rockwell Automation","vendor",{"name":21,"type":22},"CompactLogix 5380","product",{"name":24,"type":22},"ControlLogix 5580",{"name":26,"type":22},"1756-EN4TR Communications Module","80544778-fabb-4dcd-aa35-17492e5dcf4f",{"id":27,"icon":12,"name":29,"slug":30},"Vulnerabilities","vulnerabilities",[32,34,39],{"category":33},{"id":27,"icon":12,"name":29,"slug":30},{"category":35},{"id":36,"icon":12,"name":37,"slug":38},"d6f63bb8-0801-486a-be7f-171400700454","IoT\u002FOT","iot-ot",{"category":40},{"id":41,"icon":12,"name":42,"slug":43},"e7b231c8-5f79-4465-8d38-1ef13aea5a14","Threat Intelligence","threat-intelligence",[],[18,21,24],{"controls":47,"vendors":134},[48,76,105],{"slug":49,"name":50,"problem":51,"products":52},"patch-management","Automated patch management","Known holes get closed in days, not months.",[53,61,69],{"vendor_slug":54,"vendor_name":55,"vendor_logo":56,"product_slug":57,"product_name":58,"url":59,"description":60},"ivanti","Ivanti","\u002Fvendor-logos\u002Fivanti.png","neurons-patch-management","Ivanti Neurons for Patch Management","https:\u002F\u002Fwww.ivanti.com\u002Fproducts\u002Fivanti-neurons-for-patch-management","Risk-based patch management for operating systems and third-party applications.",{"vendor_slug":62,"vendor_name":63,"vendor_logo":64,"product_slug":65,"product_name":66,"url":67,"description":68},"ninjaone","NinjaOne","\u002Fvendor-logos\u002Fninjaone.png","ninjaone-patch-management","NinjaOne Patch Management","https:\u002F\u002Fwww.ninjaone.com\u002Fpatch-management\u002F","Automated patching of operating systems and third-party applications from the cloud.",{"vendor_slug":70,"vendor_name":71,"vendor_logo":72,"product_slug":49,"product_name":73,"url":74,"description":75},"qualys","Qualys","\u002Fvendor-logos\u002Fqualys.png","Qualys Patch Management","https:\u002F\u002Fwww.qualys.com\u002Fapps\u002Fpatch-management\u002F","Patch deployment for operating systems and third-party applications, linked to vulnerability findings.",{"slug":77,"name":78,"problem":79,"products":80},"network-segmentation","Network segmentation and microsegmentation","One compromised machine can no longer reach everything else.",[81,89,97],{"vendor_slug":82,"vendor_name":83,"vendor_logo":84,"product_slug":85,"product_name":86,"url":87,"description":88},"akamai","Akamai","\u002Fvendor-logos\u002Fakamai.png","guardicore-segmentation","Akamai Guardicore Segmentation","https:\u002F\u002Fwww.akamai.com\u002Fproducts\u002Fakamai-guardicore-segmentation","Software-based microsegmentation with traffic visibility.",{"vendor_slug":90,"vendor_name":91,"vendor_logo":92,"product_slug":93,"product_name":94,"url":95,"description":96},"illumio","Illumio","\u002Fvendor-logos\u002Fillumio.png","illumio-segmentation","Illumio Segmentation","https:\u002F\u002Fwww.illumio.com\u002Fillumio-segmentation","Maps traffic between workloads and enforces segmentation across data centre, cloud and endpoints.",{"vendor_slug":98,"vendor_name":99,"vendor_logo":100,"product_slug":101,"product_name":102,"url":103,"description":104},"threatlocker","ThreatLocker","\u002Fvendor-logos\u002Fthreatlocker.png","zero-trust-endpoint-firewall","Zero Trust Endpoint Firewall","https:\u002F\u002Fwww.threatlocker.com\u002Fcapabilities\u002Fzero-trust-endpoint-firewall","Centrally managed host firewall with device-level and dynamic access rules, to limit which machines can talk to each other.",{"slug":106,"name":107,"problem":108,"products":109},"firewall","Next-generation firewall and intrusion prevention","Malicious traffic is blocked at the network edge and between zones.",[110,118,126],{"vendor_slug":111,"vendor_name":112,"vendor_logo":113,"product_slug":114,"product_name":115,"url":116,"description":117},"cisco","Cisco","\u002Fvendor-logos\u002Fcisco.png","secure-firewall","Cisco Secure Firewall","https:\u002F\u002Fwww.cisco.com\u002Fsite\u002Fus\u002Fen\u002Fproducts\u002Fsecurity\u002Ffirewalls\u002Findex.html","Next-generation firewalls with intrusion prevention, using Talos threat intelligence.",{"vendor_slug":119,"vendor_name":120,"vendor_logo":121,"product_slug":122,"product_name":123,"url":124,"description":125},"sonicwall","SonicWall","\u002Fvendor-logos\u002Fsonicwall.png","sonicwall-firewalls","SonicWall firewalls","https:\u002F\u002Fwww.sonicwall.com\u002Fproducts\u002Ffirewalls","Next-generation firewalls for small business to enterprise.",{"vendor_slug":127,"vendor_name":128,"vendor_logo":129,"product_slug":130,"product_name":131,"url":132,"description":133},"check-point","Check Point","\u002Fvendor-logos\u002Fcheck-point.png","quantum-firewall","Quantum Force firewalls","https:\u002F\u002Fwww.checkpoint.com\u002Fquantum\u002Fnext-generation-firewall\u002F","Next-generation firewalls with threat prevention.",[],{"slug":136,"title":137,"body":138,"framework_refs":139,"framework_notes":151},"rockwell-automation-ics-denial-of-service-flaw-threatens-industrial-operations","Rockwell Automation ICS Denial-of-Service Flaw Threatens Industrial Operations","A denial-of-service vulnerability in Rockwell Automation's CompactLogix 5380, ControlLogix 5580, and 1756-EN4TR Communications Module exposes critical industrial control systems (ICS) to operational disruption. Attackers exploiting this flaw could halt manufacturing processes, disrupt physical operations, or create cascading failures in OT environments. The availability of a vendor patch makes timely remediation essential, as unpatched ICS devices are high-value targets for both nation-state actors and cybercriminals. This incident highlights the persistent challenge of maintaining patch currency in operational technology environments where downtime windows are limited and system availability is paramount.",[140,141,142,143,144,145,146,147,148,149,150],"CIS Control 7: Continuous Vulnerability Management","CIS Control 12: Network Infrastructure Management","CIS Control 13: Network Monitoring and Defense","NIST SP 800-82: Guide to ICS Security","NIST CSF ID.AM-1: Asset Inventory","NIST CSF PR.IP-12: Vulnerability Management Plan","NIST SI-2: Flaw Remediation","IEC 62443-2-4: Security Program Requirements for IACS Service Providers","IEC 62443-3-3: System Security Requirements and Security Levels","CISA ICS Advisory AA22-103A: ICS Patch Management Guidance","ITIL Change Management: Emergency Change Procedures",{}]