CVE-2025-43983 is a critical security vulnerability affecting KuWFi CPF908-CP5 WEB5.0_LCD_20210125 devices. The vulnerability arises from multiple unauthenticated access control weaknesses in the device's web interface endpoints, specifically within the goform/goform_set_cmd_process and goform/goform_get_cmd_process paths. These endpoints allow an attacker without any authentication to perform several malicious actions. First, the attacker can retrieve sensitive information, including the device's administrative username and password, which compromises the confidentiality of the device's credentials. Second, the attacker can modify critical device settings, impacting the integrity and potentially the availability of the device's functions. Third, the attacker can send arbitrary SMS messages through the device, which could be abused for spam, phishing, or other malicious communications. The lack of authentication requirement significantly lowers the barrier to exploitation, making it feasible for remote attackers to leverage this vulnerability without prior access or user interaction. Although no known exploits are currently reported in the wild, the nature of the vulnerability suggests a high risk of exploitation once proof-of-concept code or exploit tools become available. The absence of a CVSS score indicates that the vulnerability has not yet been fully assessed, but the technical details clearly demonstrate a severe security flaw in the device's access control mechanisms.

For European organizations, the impact of CVE-2025-43983 can be substantial, especially for those relying on KuWFi CPF908-CP5 devices in their network infrastructure or communication systems. The exposure of administrative credentials can lead to full device takeover, allowing attackers to alter network configurations, disrupt services, or pivot to other internal systems. The ability to send arbitrary SMS messages can be exploited for social engineering attacks targeting employees or customers, potentially leading to data breaches or financial fraud. Critical infrastructure providers, telecommunications companies, and enterprises using these devices for remote connectivity or IoT management are particularly at risk. The compromise of device integrity and availability could result in operational downtime, regulatory non-compliance (e.g., GDPR if personal data is involved), and reputational damage. Given the unauthenticated nature of the vulnerability, attackers can scan and exploit vulnerable devices en masse, increasing the threat surface and potential for widespread disruption across European networks.

To mitigate CVE-2025-43983, organizations should immediately identify and isolate all KuWFi CPF908-CP5 WEB5.0_LCD_20210125 devices within their environment. Since no patches or updates are currently available, it is critical to restrict network access to these devices by implementing strict firewall rules that limit management interface exposure to trusted internal networks only. Employ network segmentation to isolate vulnerable devices from critical systems and sensitive data. Monitor network traffic for unusual SMS activity or unauthorized configuration changes. If possible, disable the vulnerable web interface endpoints or the SMS functionality until a vendor patch is released. Additionally, enforce strong password policies and consider replacing affected devices with more secure alternatives. Organizations should also subscribe to vendor advisories and CVE databases to apply patches promptly once available. Regular vulnerability scanning and penetration testing should be conducted to detect exploitation attempts.