CVE-2026-9128: Rockwell Automation Studio 5000 Logix Designer unquoted search path

CVE-2026-9128 · Severity: info · CVSS 7.3 · Published 2026-07-14

Rockwell Automation Studio 5000 Logix Designer, a software suite used to program industrial controllers, contains a vulnerability in how it handles external tool paths. Because certain file paths are not properly secured with quotes, a local attacker could place a malicious file on the system that the software mistakenly runs instead of the intended tool. If successful, this allows the attacker to execute unauthorized commands with the same permissions as the legitimate user, potentially compromising the engineering workstation and the industrial systems it manages.

Technologies: Rockwell Automation Studio 5000 Logix Designer. Vendors: Rockwell Automation.

Quick answers

Is CVE-2026-9128 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-9128 being exploited in the wild.
How severe is CVE-2026-9128?
Informational severity, with a CVSS score of 7.3, published 14 July 2026.
Which products and versions are affected?
Rockwell Automation Studio 5000 Logix Designer V35.00, 34.00-34.02, 33.00-33.02, 32.00-32.04 and older.
Is there a fix for CVE-2026-9128?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-9128 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-9128?
Check whether you run Rockwell Automation Studio 5000 Logix Designer 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

A vulnerability classified as CWE-428 (Unquoted Search Path or Element) exists in Studio 5000 Logix Designer's External Tools configuration. The application fails to properly quote executable paths that contain spaces, allowing the Windows operating system to potentially resolve and execute unintended files located earlier in the search order. To exploit this, an attacker must have the ability to plant a malicious executable in a specific location on the local file system. Successful exploitation results in arbitrary code execution with the permissions of the user running the application. Rockwell Automation has released patches in versions V36.00, 35.01, 34.03, 33.03, and 32.05 to address this issue.

Affected products

  • Rockwell Automation Studio 5000 Logix Designer V35.00, 34.00-34.02, 33.00-33.02, 32.00-32.04 and older

Timeline

  • 2026-07-14: advisory: Initial release of Rockwell Automation advisory SD1783
  • 2026-07-14: disclosed

References

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