Rockwell Automation ArmorStart AOP

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1. EXECUTIVE SUMMARY CVSS v4 8.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Rockwell Automation Equipment: ArmorStart AOP Vulnerability: Uncaught Exception
2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition on the affected product.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Rockwell Automation products are affected: ArmorStart AOP: Version V2.05.07 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 Uncaught Exception CWE-248 A security issue exists within the Studio 5000 Logix Designer add-on profile (AOP) for the ArmorStart Classic distributed motor controller, resulting in a denial-of-service. This vulnerability is possible due to the input of invalid values into Component Object Model (COM) methods. CVE-2025-9437 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). A CVSS v4 score has also been calculated for CVE-2025-9437. A base score of 8.7 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Rockwell Automation reported this vulnerability to CISA.
4. MITIGATIONS Rockwell Automation reports there is no fix available and recommends users of the affected product follow security best practices. For more information, visit Rockwell Automation Security Advisories. CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as: 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.
5. UPDATE HISTORY October 16, 2025: Initial Republication of Rockwell Automation Security Advisory SD1751