Denial-of-Service Vulnerability in Rockwell Automation ArmorStart AOP
A high-severity security vulnerability, identified as CVE-2025-9437, was discovered in the Studio 5000 Logix Designer add-on profile (AOP) for the Rockwell Automation ArmorStart Classic distributed motor controller. The flaw allows an attacker to cause a denial-of-service (DoS) condition by inputting invalid values into Component Object Model (COM) methods within the affected software. This vulnerability was found internally by Rockwell Automation during routine security testing, demonstrating the company's proactive approach to product security. The vulnerability is remotely exploitable, meaning an attacker does not require physical access to the device to trigger the DoS condition. According to the available information, there is currently no evidence that this vulnerability has been exploited in the wild, and it is not listed as a Known Exploited Vulnerability (KEV). Rockwell Automation has issued a security advisory (SD1751) to inform customers of the issue and has provided both a correction and a workaround to mitigate the risk. The company emphasizes its commitment to transparency by publicly disclosing the vulnerability and offering guidance to affected users. The CVSS 4.0 base score for this vulnerability is 8.7, categorizing it as high severity and indicating a significant potential impact on industrial automation environments. Although the specific affected product versions are not detailed in the public advisories, the vulnerability is confirmed to impact the ArmorStart Classic AOP component. Customers are advised to review the official Rockwell Automation advisory for detailed mitigation steps and to apply the recommended updates or workarounds as soon as possible. The vulnerability could disrupt industrial operations by rendering the affected motor controller profile unresponsive, potentially impacting production processes. Rockwell Automation's Product Security Incident Response Team (PSIRT) is the source of the vulnerability disclosure, ensuring that the information is accurate and actionable. The advisory was published and last updated on October 14, 2025, reflecting the most current information available at the time. Organizations using the affected products should assess their exposure and implement the provided security measures to reduce the risk of exploitation. The disclosure underscores the importance of regular security testing and prompt patch management in industrial control system environments. By addressing the vulnerability before it could be exploited, Rockwell Automation demonstrates best practices in vulnerability management and customer communication.

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How this story unfolded
2 events from the most recent confirmed update back to the earliest known activity.
CISA publishes ICS advisory for Rockwell Automation ArmorStart AOP
CISA released ICS advisory ICSA-25-289-04 covering the Rockwell Automation ArmorStart AOP vulnerability. This expanded public awareness of the denial-of-service issue through a U.S. government industrial control systems alert.
Rockwell Automation discloses ArmorStart AOP DoS vulnerability
Rockwell Automation published a security advisory for a denial-of-service vulnerability affecting ArmorStart AOP. The advisory marks the vendor's public disclosure of the issue tracked as CVE-2025-9437.
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Rockwell Automation ArmorStart AOP
cisa.gov
Open sourceCVE-2025-9437 - Rockwell Automation ArmorStart® AOP Denial-of-Service Vulnerability
cvefeed.io
Open sourceArmorStart® AOP Denial-of-Service Vulnerability
rockwellautomation.com
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