CVE-2026-25196 identifies an OS command injection vulnerability (CWE-78) in the Copeland XWEB 300D PRO device, specifically in firmware versions 1.12.1 and earlier. The vulnerability arises because the device improperly sanitizes input fields related to Wi-Fi configuration, namely the SSID and password. An attacker with authenticated access to the device's configuration interface can inject arbitrary OS commands through these fields. When the device processes the configuration, these malicious commands are executed with the device's system privileges, enabling remote code execution (RCE). The vulnerability requires the attacker to have high privileges (authentication) but does not require user interaction beyond that. The CVSS v3.1 score is 8.0, reflecting high impact on confidentiality, integrity, and availability, with network attack vector and scope change. Although no exploits are currently known in the wild, the vulnerability poses a significant risk due to the potential for full system compromise. The affected product is typically used in industrial or embedded networking contexts, where device compromise could lead to broader operational disruptions. No patches were listed at the time of publication, indicating the need for vendor response and interim mitigations.

The impact of CVE-2026-25196 is substantial for organizations deploying Copeland XWEB 300D PRO devices. Successful exploitation allows attackers to execute arbitrary commands remotely, potentially leading to full device compromise. This can result in unauthorized access to sensitive network segments, disruption of network services, and manipulation or theft of data. In industrial or critical infrastructure environments, compromised devices could serve as pivot points for lateral movement or sabotage, affecting operational technology (OT) systems and causing physical process disruptions. The high severity score reflects the broad impact on confidentiality, integrity, and availability. Organizations relying on these devices for network connectivity or control should consider this vulnerability a critical risk, especially given the lack of known exploits but the ease of exploitation once authenticated. The requirement for high privileges limits exposure somewhat but does not eliminate risk, as credential compromise or insider threats could facilitate attacks.

To mitigate CVE-2026-25196, organizations should first monitor Copeland's official channels for firmware updates or patches addressing this vulnerability and apply them promptly upon release. Until patches are available, restrict access to the device's configuration interface by implementing strong network segmentation and access controls, limiting configuration access to trusted administrators only. Employ multi-factor authentication and strong password policies to reduce the risk of credential compromise. Regularly audit device configurations and logs for suspicious activity indicative of attempted exploitation. Consider deploying network intrusion detection systems (IDS) with signatures or heuristics to detect anomalous command injection attempts targeting Wi-Fi configuration parameters. If possible, disable or limit Wi-Fi configuration changes remotely or require out-of-band verification for such changes. Finally, maintain an inventory of affected devices and prioritize remediation efforts based on criticality and exposure.