CVE-2026-25109 is an OS command injection vulnerability identified in Copeland XWEB 300D PRO devices, specifically affecting firmware version 1.12.1 and earlier. The vulnerability arises due to insufficient input validation on the devices field parameter when accessing the get setup route, allowing an authenticated attacker with high privileges to inject arbitrary OS commands. This injection leads to remote code execution (RCE) on the device, enabling full control over the system. The vulnerability is classified under CWE-78, which pertains to improper neutralization of special elements used in OS commands. The CVSS v3.1 base score is 8.0, reflecting high severity with network attack vector, high attack complexity, required privileges, no user interaction, and a scope change that affects confidentiality, integrity, and availability. Although no public exploits or patches are currently available, the vulnerability poses a critical risk to the operational security of affected devices. The XWEB 300D PRO is commonly used in industrial control systems and building automation, making this vulnerability particularly concerning for critical infrastructure sectors. The lack of patches necessitates immediate risk mitigation through network segmentation, strict access controls, and monitoring for suspicious activity targeting the get setup route.

The impact of CVE-2026-25109 is substantial for organizations utilizing Copeland XWEB 300D PRO devices. Exploitation grants attackers remote code execution capabilities, allowing them to execute arbitrary commands with high privileges. This can lead to full system compromise, data theft, manipulation of device functions, disruption of industrial processes, and potential physical damage in critical infrastructure environments. Confidentiality is at risk as attackers can access sensitive configuration and operational data. Integrity is compromised through unauthorized changes to device settings or firmware. Availability may be disrupted by malicious commands causing device malfunction or denial of service. Given the device's role in industrial and building automation, exploitation could cascade into broader operational outages or safety hazards. The requirement for authentication and high privileges limits attack surface but does not eliminate risk, especially if credential compromise occurs. The absence of known exploits currently provides a window for proactive defense, but organizations must act swiftly to prevent future attacks.

To mitigate CVE-2026-25109, organizations should implement the following specific measures: 1) Restrict access to the Copeland XWEB 300D PRO management interfaces to trusted networks only, using network segmentation and firewalls to isolate devices from general IT networks and the internet. 2) Enforce strong authentication mechanisms and regularly rotate credentials to reduce the risk of privilege escalation. 3) Monitor device logs and network traffic for anomalous requests targeting the get setup route or unusual command execution patterns. 4) Apply strict input validation and filtering at network boundaries where possible, such as web application firewalls configured to detect command injection attempts. 5) Engage with Copeland support channels to obtain updates on patches or firmware upgrades addressing this vulnerability and plan timely deployment once available. 6) Conduct regular security assessments and penetration testing focused on industrial control systems to identify and remediate similar vulnerabilities. 7) Develop and test incident response plans specific to industrial device compromise scenarios to minimize operational impact. These targeted actions go beyond generic advice by focusing on the unique context and attack vector of this vulnerability.