CVE-2026-24695 is an OS command injection vulnerability classified under CWE-78, found in Copeland XWEB 300D PRO, specifically in versions 1.12.1 and prior. The flaw exists because the application improperly sanitizes input fields used as arguments to OpenSSL commands within requests sent to the utility route. An attacker with authenticated access and elevated privileges can inject arbitrary commands into these input fields, which the system then executes. This leads to remote code execution (RCE), allowing the attacker to run arbitrary code on the device, potentially gaining full control. The vulnerability affects the confidentiality, integrity, and availability of the device, as attackers can exfiltrate sensitive data, alter system configurations, or disrupt operations. The CVSS v3.1 score is 8.0, indicating high severity, with attack vector network (AV:N), attack complexity high (AC:H), privileges required high (PR:H), no user interaction (UI:N), and scope changed (S:C). No public exploits are known yet, but the vulnerability's nature and impact make it a critical risk for industrial control systems relying on this product. The lack of available patches at the time of publication necessitates immediate mitigation efforts.

The vulnerability allows remote code execution on critical HVAC control devices, potentially enabling attackers to disrupt heating, ventilation, and air conditioning systems in industrial, commercial, and institutional environments. This can lead to operational downtime, physical damage to equipment, and safety hazards for occupants. Confidentiality breaches may expose sensitive operational data or credentials, while integrity compromises could allow attackers to alter system settings or firmware. Availability impacts could result in denial of service or loss of environmental controls, affecting business continuity and safety compliance. Given the device's role in building management and industrial environments, exploitation could have cascading effects on dependent systems and infrastructure. Organizations worldwide using Copeland XWEB 300D PRO devices are at risk, especially those in sectors like manufacturing, healthcare, and critical infrastructure.

1. Immediately restrict access to the utility route and OpenSSL argument fields to trusted administrators only, using network segmentation and access control lists. 2. Enforce strong authentication and privilege management to limit who can access vulnerable functionality. 3. Monitor network traffic and system logs for unusual commands or requests targeting the utility route. 4. Implement application-layer input validation and sanitization to prevent injection of malicious commands. 5. If patches become available, apply them promptly to remediate the vulnerability. 6. Consider deploying Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) with custom rules to detect and block injection attempts. 7. Conduct regular security assessments and penetration testing focused on command injection vectors. 8. Maintain an incident response plan tailored to industrial control system compromises to quickly isolate and remediate affected devices.