CVE-2025-7025: Rockwell Automation Arena RCE Vulnerability

CVE-2025-7025 Overview

CVE-2025-7025 is a heap-based memory corruption vulnerability [CWE-122] in Rockwell Automation Arena® Simulation. A specially crafted simulation file forces Arena to read and write past the end of allocated memory space. Successful exploitation requires user interaction, such as opening a malicious file or visiting a malicious webpage.

An attacker who convinces a user to open a malicious Arena file can execute arbitrary code in the context of the user or disclose sensitive process memory. The flaw affects industrial simulation environments commonly used by manufacturing engineers and operations technology (OT) personnel.

Critical Impact
A crafted Arena file enables arbitrary code execution and information disclosure on engineering workstations, providing a foothold into OT environments.

Affected Products

Rockwell Automation Arena® Simulation
Engineering workstations running vulnerable Arena versions
Windows hosts used by simulation engineers in OT environments

Discovery Timeline

2025-08-05 - CVE-2025-7025 published to the National Vulnerability Database
2025-08-07 - Last updated in NVD database

Technical Details for CVE-2025-7025

Vulnerability Analysis

The vulnerability is classified as a heap-based buffer overflow [CWE-122] affecting Arena® Simulation. Arena parses proprietary simulation model files, and the affected parsing logic does not properly validate buffer boundaries when processing attacker-controlled fields. A malformed file causes Arena to read and write beyond the end of an allocated heap region.

Memory corruption of this kind can yield two primary outcomes. The first is arbitrary code execution under the privileges of the user running Arena. The second is disclosure of adjacent heap memory, which may contain sensitive data such as license information, project content, or pointers useful for bypassing exploit mitigations.

The attack vector is local and requires user interaction, but the impact on confidentiality, integrity, and availability is high. In OT and ICS engineering environments, compromise of an engineering workstation can serve as a pivot point into control networks.

Root Cause

The root cause is improper bounds checking when Arena parses fields within a custom simulation file. Length values supplied in the file are trusted without validation against the size of the destination heap allocation, allowing reads and writes past the buffer boundary.

Attack Vector

Exploitation requires an authorized user to open a malicious Arena file delivered through phishing email, removable media, file shares, or a malicious webpage that initiates a download. No network exposure of Arena itself is required. Once the file is opened, parsing logic triggers the out-of-bounds operations and corrupts heap metadata or adjacent objects.

No code examples are publicly available. See the Rockwell Automation Security Advisory SD1731 for vendor-provided technical details.

Detection Methods for CVE-2025-7025

Indicators of Compromise

Unexpected crashes or abnormal termination of Arena.exe shortly after a file is opened
Arena simulation files (.doe and related extensions) received from untrusted email senders, web downloads, or removable media
Child processes spawned by Arena.exe such as cmd.exe, powershell.exe, or rundll32.exe
Outbound network connections originating from the Arena process to unfamiliar destinations

Detection Strategies

Monitor process creation events where Arena.exe is the parent of any scripting or shell interpreter
Hunt for crash and Windows Error Reporting events associated with the Arena binary across engineering workstations
Correlate file delivery (email gateway, web proxy, USB mount) with subsequent Arena process activity
Inspect endpoint telemetry for memory protection violations and access violation exceptions within the Arena process

Monitoring Recommendations

Enable detailed process and module load logging on hosts where Arena is installed
Forward Application and Windows Error Reporting event logs to a central log platform for retention and analysis
Track lateral movement attempts originating from Arena workstations toward OT and ICS network segments
Alert on first-time execution of Arena on hosts not designated as engineering workstations

How to Mitigate CVE-2025-7025

Immediate Actions Required

Apply the fixed version of Arena® Simulation as published in Rockwell Automation Advisory SD1731
Inventory all hosts with Arena installed and prioritize patching of internet-connected and email-enabled workstations
Instruct users not to open Arena files received from untrusted or unverified sources
Restrict execution of Arena to a defined set of engineering users

Patch Information

Rockwell Automation has published a security advisory and updated software addressing CVE-2025-7025. Refer to the Rockwell Automation Security Advisory SD1731 for fixed version numbers, download instructions, and upgrade guidance.

Workarounds

Limit Arena to dedicated engineering workstations isolated from general productivity applications and email
Block delivery of Arena file extensions through email gateways unless from approved internal senders
Enforce application allowlisting so that only signed and approved Arena binaries can execute
Apply Windows exploit mitigations (DEP, ASLR, CFG) and run Arena under a standard user account rather than a local administrator

bash

# Example: enable Windows Defender Exploit Protection for the Arena process
Set-ProcessMitigation -Name Arena.exe -Enable DEP,SEHOP,ForceRelocateImages,BottomUp,HighEntropy,TerminateOnError