CVE-2026-2670 is an OS command injection vulnerability identified in the Advantech WISE-6610 industrial IoT gateway, specifically version 1.2.1_20251110. The flaw resides in the Background Management component, within the /cgi-bin/luci/admin/openvpn_apply CGI script. The vulnerability arises from improper sanitization of the delete_file argument, which an attacker can manipulate to inject arbitrary operating system commands. This injection occurs remotely, without requiring user interaction or authentication, making it highly exploitable. The vulnerability has been assigned a CVSS 4.0 score of 8.6, reflecting its critical impact on confidentiality, integrity, and availability. The vendor has not issued any patches or advisories, and public exploit code is available, increasing the risk of active exploitation. The device is commonly used in industrial environments for secure VPN connectivity and remote management, meaning successful exploitation could lead to full system compromise, data exfiltration, or disruption of industrial processes. The lack of vendor response and patch availability heightens the urgency for affected organizations to implement compensating controls.

For European organizations, particularly those in industrial automation, manufacturing, and critical infrastructure sectors, this vulnerability poses a significant threat. Exploitation could allow attackers to execute arbitrary commands on the WISE-6610 device, potentially leading to unauthorized access to sensitive operational data, disruption of industrial control systems, and loss of availability of critical services. Given the device’s role in VPN and remote management, attackers could pivot to internal networks, escalating the scope of compromise. This could result in operational downtime, safety risks, and financial losses. The public availability of exploits and lack of vendor patches increase the likelihood of attacks, especially targeting organizations with inadequate network segmentation or outdated device firmware. The impact extends beyond individual devices, potentially affecting entire industrial processes and supply chains within Europe.

1. Immediately isolate all Advantech WISE-6610 devices running version 1.2.1_20251110 from untrusted networks, restricting access to trusted management networks only. 2. Disable or restrict access to the /cgi-bin/luci/admin/openvpn_apply interface if possible, or block HTTP/HTTPS access to this CGI endpoint via firewall rules. 3. Implement strict network segmentation to prevent lateral movement from compromised devices to critical infrastructure. 4. Monitor network traffic and device logs for unusual commands or access patterns related to the delete_file parameter or the openvpn_apply CGI script. 5. Use intrusion detection/prevention systems (IDS/IPS) with signatures targeting known exploit patterns for this vulnerability. 6. Engage with Advantech for updates or patches and apply them promptly once available. 7. Consider deploying compensating controls such as application-layer firewalls or reverse proxies to sanitize inputs to vulnerable endpoints. 8. Conduct regular security assessments and penetration tests focusing on industrial IoT devices to detect similar vulnerabilities.