# CVE-2026-9633: Rockwell Automation Redundancy Module Configuration Tool DLL hijacking

Source: https://junglewise.ai/threats/cve-2026-9633-rockwell-automation-redundancy-module-configuration-tool-dll  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-01. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-9633 · Severity: info · CVSS 7.3 · Published 2026-09-01

Rockwell Automation's Redundancy Module Configuration Tool is used to manage redundancy systems in industrial control networks. The tool searches for required DLL files in system directories that may be writable by regular users. An attacker can place a malicious DLL in one of these directories, which will be loaded with Administrator/SYSTEM privileges when an administrator runs the tool, leading to complete system compromise.

Vendors: [Rockwell Automation](https://junglewise.ai/threats/vendors/rockwell-automation).

## Quick answers

**Is CVE-2026-9633 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9633 being exploited in the wild.

**How severe is CVE-2026-9633?** Informational severity, with a CVSS score of 7.3, published 1 September 2026.

**Which products and versions are affected?** Rockwell Automation Redundancy Module Configuration Tool 10.00.00 (corrected in 10.01.00).

**Is there a fix for CVE-2026-9633?** A patch was published on 2026-09-01: Version 10.01.00 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-9633 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-9633?** Check whether you run Rockwell Automation Redundancy Module Configuration Tool at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a classic DLL hijacking / incorrect default permissions flaw (CWE-276). The RM3ConfigTool.exe binary searches system PATH directories for required DLLs, but one or more of these directories have overly permissive permissions allowing standard users to write files. An attacker with local access can place a malicious DLL in a writable PATH directory. When an administrator executes the tool, the malicious DLL is loaded into the process running with elevated privileges, achieving arbitrary code execution as Administrator or SYSTEM. Patch is available: upgrade to version 10.01.00 or later.

## Affected products

- Rockwell Automation Redundancy Module Configuration Tool 10.00.00 (corrected in 10.01.00)

## Timeline

- 2026-09-01: disclosed
- 2026-09-01: patched: Version 10.01.00 released

## References

- [https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1800.html](https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1800.html)

## Related threats

- [Rockwell Automation Redundancy Module Configuration Tool DLL search path privilege escalation](https://junglewise.ai/threats/cve-2026-9634-rockwell-automation-redundancy-module-configuration-tool-dll)