CVE-2026-24517 is an OS command injection vulnerability classified under CWE-78 affecting Copeland XWEB 300D PRO devices running firmware version 1.12.1 and earlier. The flaw exists in the firmware update route, where insufficient input validation allows an authenticated attacker with high privileges to inject arbitrary OS commands. This injection enables remote code execution (RCE) on the affected system, compromising the device's operating environment. The vulnerability requires authentication, indicating that attackers must have valid credentials or exploit other weaknesses to gain access before leveraging this flaw. The CVSS v3.1 score of 8.0 reflects the high impact on confidentiality, integrity, and availability, with network attack vector, high attack complexity, and no user interaction needed. The vulnerability's scope is systemic, affecting the entire device and potentially the network it controls. No patches or known exploits are currently available, but the risk remains significant given the device's role in industrial or critical infrastructure environments. The vulnerability was reserved on February 5, 2026, and published on February 27, 2026, by ICS-CERT, emphasizing its relevance to industrial control systems security.

The vulnerability allows attackers to execute arbitrary commands remotely on Copeland XWEB 300D PRO devices, leading to full system compromise. This can result in unauthorized disclosure of sensitive data, manipulation or destruction of device configurations, and disruption of device availability. Given the device's likely use in industrial or building management systems, exploitation could cause operational downtime, safety hazards, and cascading effects on dependent systems. The high CVSS score indicates severe impacts on confidentiality, integrity, and availability. Organizations relying on these devices face risks including loss of control over critical infrastructure components, potential regulatory penalties, and reputational damage. The requirement for authentication limits exposure but does not eliminate risk, especially if credential theft or insider threats exist. The absence of known exploits currently provides a window for proactive defense, but the vulnerability remains a critical threat until patched.

1. Immediately restrict network access to the Copeland XWEB 300D PRO devices by implementing strict firewall rules and network segmentation to limit exposure to trusted administrators only. 2. Enforce strong authentication mechanisms and rotate credentials regularly to reduce the risk of credential compromise. 3. Monitor device logs and network traffic for unusual firmware update requests or command injection patterns indicative of exploitation attempts. 4. Disable or restrict firmware update functionality if possible until a patch is available to prevent exploitation via the vulnerable route. 5. Engage with Copeland support or vendor channels to obtain security advisories and apply firmware updates promptly once released. 6. Conduct regular security assessments and penetration testing focusing on authentication mechanisms and input validation controls. 7. Implement intrusion detection/prevention systems (IDS/IPS) tuned to detect command injection signatures targeting the firmware update interface. 8. Educate administrators on the risks and signs of exploitation to enable rapid incident response. 9. Consider deploying compensating controls such as application-layer gateways or reverse proxies to sanitize inputs to the firmware update endpoint. 10. Maintain an incident response plan tailored to industrial control system compromises to minimize impact if exploitation occurs.