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Rockwell Automation Arena

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Overview

Rockwell Automation's Arena software has several critical vulnerabilities that could allow attackers to execute arbitrary code. These vulnerabilities affect versions up to V17.00.00 and include issues in components like model.exe, expmt.exe, linker.exe, and siman.exe. The problems arise from improper validation of user-supplied data, leading to out-of-bounds writes. Users are urged to update to version V17.00.01 to mitigate the risks. This situation is particularly concerning for sectors involved in critical manufacturing, as the software is used worldwide. No active exploitation of these vulnerabilities has been reported yet, but organizations should remain vigilant.

Key Takeaways

  • Affected Systems: Rockwell Automation Arena versions <=V17.00.00; components: model.exe, expmt.exe, linker.exe, siman.exe; vendor: Rockwell Automation.
  • Action Required: Users should update to Rockwell Automation Arena version V17.
  • Timeline: Newly disclosed

Original Article Summary

View CSAF Summary Successful exploitation these vulnerabilities could allow an attacker to execute arbitrary code in the context of the current process. The following versions of Rockwell Automation Arena are affected: Arena <=V17.00.00 (CVE-2026-8085, CVE-2026-8312, CVE-2026-8313, CVE-2026-8314) CVSS Vendor Equipment Vulnerabilities v3 7.8 Rockwell Automation Rockwell Automation Arena Out-of-bounds Write Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-8085 A security issue exists within Arena Simulation due to a memory corruption vulnerability in the model.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file. View CVE Details Affected Products Rockwell Automation Arena Vendor: Rockwell Automation Product Version: Rockwell Automation Arena: <=V17.00.00 Product Status: known_affected Remediations Mitigation Rockwell Automation recommends users to update to V17.00.01 Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-8312 A security issue exists within Arena Simulation due to a memory corruption vulnerability in the expmt.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file. View CVE Details Affected Products Rockwell Automation Arena Vendor: Rockwell Automation Product Version: Rockwell Automation Arena: <=V17.00.00 Product Status: known_affected Remediations Mitigation Rockwell Automation recommends users to update to V17.00.01 Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-8313 A security issue exists within Arena Simulation due to a memory corruption vulnerability in the linker.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file. View CVE Details Affected Products Rockwell Automation Arena Vendor: Rockwell Automation Product Version: Rockwell Automation Arena: <=V17.00.00 Product Status: known_affected Remediations Mitigation Rockwell Automation recommends users to update to V17.00.01 Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-8314 A security issue exists within Arena Simulation due to a memory corruption vulnerability in the siman.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file. View CVE Details Affected Products Rockwell Automation Arena Vendor: Rockwell Automation Product Version: Rockwell Automation Arena: <=V17.00.00 Product Status: known_affected Remediations Mitigation Rockwell Automation recommends users to update to V17.00.01 Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Acknowledgments Michael Heinzl reported these vulnerabilities to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. Revision History Initial Release Date: 2026-07-16 Date Revision Summary 2026-07-16 1 Initial Publication Legal Notice and Terms of Use

Impact

Rockwell Automation Arena versions <=V17.00.00; components: model.exe, expmt.exe, linker.exe, siman.exe; vendor: Rockwell Automation.

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Users should update to Rockwell Automation Arena version V17.00.01 to address the vulnerabilities.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Phishing, CVE, Vulnerability, and 2 more.

Read Original Article

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