Rockwell Automation ControlLogix Ethernet Modules
1. EXECUTIVE SUMMARY
- CVSS v4 9.3
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Rockwell Automation
- Equipment: ControlLogix Ethernet Modules
- Vulnerability: Initialization of a Resource with an Insecure Default
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow remote attackers to perform memory dumps, modify memory, and control execution flow.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Rockwell Automation ControlLogix Ethernet Modules are affected:
- 1756-EN2T/D: Version 11.004 or below
- 1756-EN2F/C: Version 11.004 or below
- 1756-EN2TR/C: Version 11.004 or below
- 1756-EN3TR/B: Version 11.004 or below
- 1756-EN2TP/A: Version 11.004 or below
3.2 VULNERABILITY OVERVIEW
3.2.1 Initialization of a Resource with an Insecure Default CWE-1188
Rockwell Automation ControlLogix Ethernet Modules are vulnerable to a security issue where the web-based debugger agent is enabled by default on released devices. If a specific IP address is used to connect to the WDB agent, it can allow remote attackers to perform memory dumps, modify memory, and control execution flow.
CVE-2025-7353 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2025-7353. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Chemical, Energy, Critical Manufacturing, Food and Agriculture, Transportation Systems, Water and Wastewater Systems
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Rockwell Automation reported this vulnerability to CISA.
4. MITIGATIONS
Rockwell Automation recommends that ControlLogix Ethernet Module users update to Version 12.001 if possible. If users are unable to upgrade to Version 12.001, security best practices should be applied.
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
- August 14, 2025: Initial Republication
This product is provided subject to this Notification and this Privacy & Use policy.
Vendor
- Rockwell Automation