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PatchSiren cyber security CVE debrief

CVE-2024-7567 Rockwell Automation CVE debrief

A denial-of-service vulnerability exists in Rockwell Automation Micro850/870 programmable logic controllers (PLCs) via the CIP/Modbus port. Successful exploitation can disrupt CIP/Modbus communications for a short duration. The vulnerability was disclosed on August 13, 2024, with a CVSS 3.1 score of 5.3 (Medium severity). Affected products are versions prior to v22.011. Rockwell Automation has released firmware version v22.011 to address this issue.

Vendor
Rockwell Automation
Product
PLC - Micro850/870 (2080 -L50E/2080 -L70E)
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2024-08-13
Original CVE updated
2024-08-13
Advisory published
2024-08-13
Advisory updated
2024-08-13

Who should care

Organizations operating Rockwell Automation Micro850 or Micro870 PLCs in industrial environments, particularly those with exposed or network-accessible CIP/Modbus ports. Critical infrastructure operators, manufacturing facilities, and OT security teams should prioritize firmware updates to maintain operational continuity.

Technical summary

The vulnerability exists in the CIP/Modbus port implementation of Rockwell Automation Micro850/870 PLCs (2080-L50E/2080-L70E). An attacker can trigger a denial-of-service condition that temporarily disrupts CIP/Modbus communications. The attack vector is network-based with low attack complexity and no required privileges or user interaction. The vulnerability has a CVSS 3.1 score of 5.3 (Medium) with AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. Remediation is available through firmware update to version v22.011.

Defensive priority

medium

Recommended defensive actions

  • Update affected Micro850/870 PLC firmware to version v22.011 or later
  • Apply Rockwell Automation security best practices for industrial control systems
  • Implement network segmentation to limit exposure of CIP/Modbus ports
  • Monitor CIP/Modbus communications for unexpected disruptions
  • Review and implement CISA ICS recommended practices for defense-in-depth

Evidence notes

The vulnerability affects Rockwell Automation PLC - Micro850/870 (2080-L50E/2080-L70E) with firmware versions prior to v22.011. The issue is a network-accessible denial-of-service condition affecting industrial control system communications. CISA published advisory ICSA-24-226-07 on August 13, 2024, coordinating disclosure.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-7567 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-7567

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-7567 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-7567

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-226-07.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-226-07

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.