Junglewise Threat Intelligence

CVE-2026-8312: Rockwell Automation Arena Simulation out-of-bounds write in expmt.exe

CVE-2026-8312 · Severity: info · CVSS 7.8 · Published 2026-07-14

Technologies: Rockwell Automation Arena Simulation. Vendors: Rockwell Automation.

Executive brief

Rockwell Automation Arena Simulation, a software tool used to model and optimize complex industrial systems, is affected by a memory corruption vulnerability. An attacker could exploit this by tricking a user into opening a specially crafted malicious file. Successful exploitation could allow the attacker to take control of the user's system, potentially leading to data theft or disruption of simulation operations.

Technical details

A memory corruption vulnerability exists in the expmt.exe (Siman) component of Rockwell Automation Arena Simulation due to improper validation of user-supplied data. This flaw results in an out-of-bounds write (CWE-787). The attack vector is local and requires user interaction, specifically convincing a user to open a malicious file. If successfully exploited, an attacker can execute arbitrary code in the context of the current process. The vulnerability is addressed in version V17.00.01.

Affected products

  • Rockwell Automation Arena Simulation V17.00.00 and prior

Timeline

  • 2026-07-14: disclosed
  • 2026-07-14: advisory
  • 2026-07-14: patched

References

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