CVE-2025-7033: Rockwell Automation Arena RCE Vulnerability

CVE-2025-7033 Overview

CVE-2025-7033 is a memory abuse vulnerability in Rockwell Automation Arena® Simulation. A crafted file can force the application to read and write past the end of allocated memory space, leading to a heap-based buffer overflow condition [CWE-122]. Successful exploitation requires user interaction, such as opening a malicious file or visiting a malicious webpage. An attacker who triggers the flaw can execute arbitrary code in the context of the user or disclose memory contents. The issue affects industrial environments where Arena Simulation is used to model manufacturing and process workflows.

Critical Impact
Threat actors can achieve local code execution or information disclosure on systems running vulnerable versions of Arena Simulation by tricking a user into opening a malicious simulation file.

Affected Products

Rockwell Automation Arena® Simulation
Vendor: Rockwell Automation
CPE: cpe:2.3:a:rockwellautomation:arena:*:*:*:*:*:*:*:*

Discovery Timeline

2025-08-05 - CVE-2025-7033 published to NVD
2025-08-07 - Last updated in NVD database

Technical Details for CVE-2025-7033

Vulnerability Analysis

The vulnerability is a heap-based memory access flaw classified under [CWE-122]. Arena Simulation parses custom simulation files that contain user-controlled structures. During parsing, the application fails to validate boundary conditions correctly. As a result, a crafted file causes reads and writes beyond the end of an allocated heap buffer.

This behavior corrupts adjacent heap metadata or object pointers. An attacker controlling the data placed past the boundary can influence program flow. The flaw enables both confidentiality and integrity impact, since attackers can either leak memory or overwrite execution structures.

Root Cause

The root cause is insufficient bounds checking when Arena Simulation processes structured data from custom files. The parser trusts size or offset fields embedded in the file. When those fields exceed the allocated buffer, the application continues reading and writing, producing an out-of-bounds heap access.

Attack Vector

The attack vector is local and requires user action. An attacker delivers a malicious Arena project file through phishing, a compromised website, a shared network location, or removable media. When an engineer or operator opens the file inside Arena Simulation, the parser triggers the memory corruption. Execution occurs with the privileges of the logged-in user, which on engineering workstations often includes access to operational technology assets.

No verified public proof-of-concept code is available for this vulnerability. Refer to the Rockwell Automation Security Advisory SD1731 for vendor-supplied technical details.

Detection Methods for CVE-2025-7033

Indicators of Compromise

Unexpected crashes or abnormal termination of Arena.exe shortly after opening a simulation file.
Child processes spawned by Arena Simulation that are not part of normal operation, such as command shells or scripting interpreters.
Arena Simulation files (.doe, .do$) arriving from external email, web downloads, or untrusted USB media.
Outbound network connections from the Arena process to unknown hosts after opening a file.

Detection Strategies

Monitor process creation events where Arena.exe is the parent of cmd.exe, powershell.exe, rundll32.exe, or other living-off-the-land binaries.
Inspect Windows Error Reporting and crash dumps for access violations originating in Arena Simulation modules.
Apply file reputation and sandboxing controls to Arena project files received from external sources.
Correlate endpoint telemetry with email and web gateway logs to identify delivery of suspicious simulation files.

Monitoring Recommendations

Enable detailed process and file telemetry on all engineering workstations running Arena Simulation.
Alert on first-time-seen Arena project files executed from user download folders or email attachments.
Track memory integrity violations and exploit protection events reported by Windows Defender Exploit Guard or equivalent tooling.

How to Mitigate CVE-2025-7033

Immediate Actions Required

Identify all hosts running Rockwell Automation Arena® Simulation and inventory installed versions.
Apply the patched version published by Rockwell Automation in advisory SD1731 as soon as it is validated for your environment.
Restrict opening of Arena project files to those originating from trusted internal sources only.
Brief engineering staff on the risk of opening untrusted simulation files or links.

Patch Information

Rockwell Automation has released remediation guidance in the Rockwell Automation Security Advisory SD1731. Administrators should consult the advisory for the fixed version and upgrade instructions specific to their licensed release of Arena Simulation.

Workarounds

Block delivery of Arena project files through email gateways and enforce inspection of archives that may contain them.
Run Arena Simulation under a standard user account, never with administrative privileges, to limit post-exploitation impact.
Segment engineering workstations from production OT networks so that compromise of a single host cannot pivot into control systems.
Enable Windows exploit mitigations such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Control Flow Guard (CFG) on hosts running Arena.

bash

# Example: enumerate Arena installations across Windows hosts via PowerShell remoting
Invoke-Command -ComputerName (Get-Content .\engineering_hosts.txt) -ScriptBlock {
    Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* |
        Where-Object { $_.DisplayName -like '*Arena*' } |
        Select-Object PSComputerName, DisplayName, DisplayVersion, Publisher
}