Rockwell Automation Redundancy Module Configuration Tool

Summary

Rockwell Automation has released an advisory for vulnerabilities in its Redundancy Module Configuration Tool. Successful exploitation could allow an attacker to escalate privileges and execute processes as an administrator. The affected versions are 10.00.00 and versions between 9.00.00 and 10.00.00. A patched version, 10.01.00, is available.

Full text

ICS Advisory Rockwell Automation Redundancy Module Configuration Tool Release DateSeptember 01, 2026 Alert CodeICSA-26-244-02 Related topics: Industrial Control System Vulnerabilities , Industrial Control Systems View CSAF Summary Successful exploitation of these vulnerabilities could allow for an attacker to escalate and execute processes with administrator privileges. The following versions of Rockwell Automation Redundancy Module Configuration Tool are affected: Redundancy Module Configuration Tool 10.00.00 (CVE-2026-9633) Redundancy Module Configuration Tool >=9.00.00|<=10.00.00 (CVE-2026-9634) CVSS Vendor Equipment Vulnerabilities v3 7.3 Rockwell Automation Rockwell Automation Redundancy Module Configuration Tool Incorrect Default Permissions Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-9633 A security issue exists within the Redundancy Module Configuration Tool. The RM3ConfigTool.exe binary searches directories in the system path for a required DLL, and one or more of these directories may be writable by standard (non administrator) users due to incorrect default permissions. If a local attacker places a malicious DLL in such a directory and an administrator subsequently runs the tool, the malicious DLL is loaded into the elevated process and executes with Administrator/SYSTEM privileges. View CVE Details Affected Products Rockwell Automation Redundancy Module Configuration Tool Vendor:Rockwell Automation Product Version:Rockwell Automation Redundancy Module Configuration Tool: 10.00.00 Product Status:known_affected Remediations Vendor fixRockwell Automation has released Redundancy Module Configuration Tool version 10.01.00 for users to install. MitigationCustomers using the affected software, who are not able to upgrade to one of the corrected versions, should use Rockwell Automation's security best practices (https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight).https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight MitigationFor more information, see Rockwell Automation Security Advisories: https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html.https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html Relevant CWE: CWE-276 Incorrect Default Permissions Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.3 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-9634 A security issue exists within the Redundancy Module Configuration Tool. The RMConfigTool.exe binary searches directories in the system path for a required DLL, and one or more of these directories may be writable by standard (non-administrator) users due to incorrect default permissions. If a local attacker places a malicious DLL in such a directory and an administrator subsequently runs the tool, the malicious DLL is loaded into the elevated process and executes with Administrator/SYSTEM privileges. View CVE Details Affected Products Rockwell Automation Redundancy Module Configuration Tool Vendor:Rockwell Automation Product Version:Rockwell Automation Redundancy Module Configuration Tool: >=9.00.00|<=10.00.00 Product Status:known_affected Remediations Vendor fixRockwell Automation has released Redundancy Module Configuration Tool version 10.01.00 for users to install. MitigationCustomers using the affected software, who are not able to upgrade to one of the corrected versions, should use Rockwell Automation's security best practices (https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight).https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight MitigationFor more information, see Rockwell Automation Security Advisories: https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html.https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html Relevant CWE: CWE-276 Incorrect Default Permissions Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.3 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Acknowledgments Rockwell Automation reported these vulnerabilities to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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. These vulnerabilities are not exploitable remotely. Revision History Initial Release Date: 2026-09-01 Date Revision Summary 2026-09-01 1 Initial Republication of Rockwell Automation Security Advisory Legal Notice and Terms of Use This product is provided subject to this Notification and this Privacy & Use policy. Vendor Rockwell Automation Tags Sector: Critical Manufacturing Sector Topics: Industrial Control System Vulnerabilities, Industrial Control Systems Please share your thoughts We recently updated our anonymous product survey; we welcome your feedback. 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Indicators of Compromise

• cve — CVE-2026-9633

Entities