Rockwell Automation Studio 5000 Logix Designer Configuration File .user path improper authorization

Summaryinfo

A vulnerability described as critical has been identified in Rockwell Automation Studio 5000 Logix Designer. The affected element is an unknown function of the file .user of the component Configuration File. Such manipulation of the argument path leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-9127. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Rockwell Automation Studio 5000 Logix Designer (unknown version). Affected by this issue is an unknown code block of the file .user of the component Configuration File. The manipulation of the argument path with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A remote code execution security issue exists within Studio 5000 Logix Designer® due to incorrect authorization on a configuration file. This can allow any authenticated user to modify the paths of external tools configured within the application. If exploited, an attacker could alter the configuration to point to a malicious executable, resulting in arbitrary code execution when any user interacts with the external tools functionality.

The advisory is available at rockwellautomation.com. This vulnerability is handled as CVE-2026-9127 since 05/20/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/14/2026). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Automation Software

Vendor

• Rockwell Automation

Name

• Studio 5000 Logix Designer

License

• commercial

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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