CVE-2026-9128

HIGHCVSS 7.5/10EPSS 0.13%

Last modified

CVE-2026-9128 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A code execution security issue exists within Studio 5000 Logix Designer® due to an unquoted search path in the External Tools configuration. The executable paths specified in the external tools configuration file are not properly quoted, and because these paths contain spaces, the operating system may resolve them to unintended executables placed earlier in the search order. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

Description

A code execution security issue exists within Studio 5000 Logix Designer® due to an unquoted search path in the External Tools configuration. The executable paths specified in the external tools configuration file are not properly quoted, and because these paths contain spaces, the operating system may resolve them to unintended executables placed earlier in the search order. If exploited, an attacker could plant a malicious executable in a location within the search path, resulting in arbitrary code execution with the same permissions of the user running the application.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
RockwellautomationStudio 5000 Logix Designer< 32.05
RockwellautomationStudio 5000 Logix Designer>= 33.00, < 33.03
RockwellautomationStudio 5000 Logix Designer>= 34.00, < 34.03
RockwellautomationStudio 5000 Logix Designer35.00

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-9128?
A code execution security issue exists within Studio 5000 Logix Designer® due to an unquoted search path in the External Tools configuration. The executable paths specified in the external tools configuration file are not properly quoted, and because these paths contain spaces, the operating system may resolve them to unintended executables placed earlier in the search order. If exploited, an attacker could plant a malicious executable in a location within the search path, resulting in arbitrary code execution with the same permissions of the user running the application.
How severe is CVE-2026-9128?
CVE-2026-9128 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2026-9128?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST