Rockwell Automation 1715 EtherNet/IP Comms Module

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1. EXECUTIVE SUMMARY CVSS v4 7.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Rockwell Automation Equipment: 1715 EtherNet/IP Vulnerabilities: Allocation of Resources Without Limits or Throttling, Out-of-bounds Write
2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to cause the web server to crash, requiring a restart to recover.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Rockwell Automation 1715 EtherNet/IP Comms Module are affected: 1715 EtherNet/IP: Versions 3.003 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING CWE-770 A denial-of-service security issue exists in the affected product and version. The security issue stems from a high number of requests sent to the web server. This could result in a web server crash; however, this does not impact I/O control or communication. A power cycle is required to recover and utilize the webpage. CVE-2025-9177 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-2025-9177. A base score of 7.7 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H). 3.2.2 OUT-OF-BOUNDS WRITE CWE-787 A denial-of-service security issue exists in the affected product and version. The security issue is caused through CIP communication using crafted payloads. The security issue could result in no CIP communication with 1715 EtherNet/IP Adapter. A restart is required to recover. CVE-2025-9178 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-2025-9178. A base score of 7.7 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Rockwell Automation reported these vulnerabilities to CISA.
4. MITIGATIONS Rockwell Automation has released the following for user implementation: 1715 EtherNet/IP Comms Module: Versions 3.011 and later Users of the affected software who are unable to upgrade to one of the corrected versions should apply Rockwell Automation’s security best practices. For more information, see Rockwell Automation’s advisory SD1757. CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, 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. 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 these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY October 14, 2025: Initial Republication of Rockwell Automation advisory SD1757