CVE-2026-9634
highpriority · track · 0OT risk · elevatedEPSS 0.001 · 3 %ileUSEPSS · scored 2026-10-27
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedRedundancy Module Configuration Toolcisa_csaf_ot
Rockwell Automation has released Redundancy Module Configuration Tool version 10.01.00 for users to install.
- MitigationRedundancy Module Configuration Toolcisa_csaf_ot
Customers 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
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-26-244-02Rockwell Automation Redundancy Module Configuration Tool2026-09-01icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow for an attacker to escalate and execute processes with administrator privileges.
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
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