Overview
The cybersecurity world is rife with threats, and one such vulnerability that has recently rocked the scene is CVE-2025-43983. This vulnerability is present in KuWFi CPF908-CP5 WEB5.0_LCD_20210125 devices, making them susceptible to unauthenticated access. This vulnerability is not only a threat to the security of these devices, but it also poses a significant risk to the data and information stored within. The devices become an easy target for attackers who can retrieve sensitive information, modify device settings and send arbitrary SMS messages without any authentication. This vulnerability is of particular concern to organizations that rely heavily on these devices, as it can lead to severe data leakage and potential system compromise.
Vulnerability Summary
CVE ID: CVE-2025-43983
Severity: Critical (9.1 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized access to sensitive information, ability to modify critical device settings, and send arbitrary SMS messages
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Product | Affected Versions
KuWFi CPF908-CP5 WEB5.0_LCD_20210125 | All versions
How the Exploit Works
The vulnerability exploits lack of proper authentication in the goform/goform_set_cmd_process and goform/goform_get_cmd_process within the KuWFi CPF908-CP5 devices. This allows an attacker to bypass the authentication process and gain unauthorized access to the device’s control and settings. Once access is gained, the attacker can retrieve sensitive information, including the device admin username and password. Furthermore, they can modify critical device settings and even send arbitrary SMS messages, all without any user interaction.
Conceptual Example Code
The following is a conceptual example that illustrates how an attacker might exploit this vulnerability. This example uses a simple HTTP GET request to the vulnerable endpoint.
GET /goform/goform_get_cmd_process HTTP/1.1
Host: vulnerable-device.comThe server would then respond with sensitive information (including the device admin username and password) in clear text, giving the attacker full access to the device and its settings.
Countermeasures and Mitigation
The most effective mitigation strategy is to apply the vendor patch as soon as it is available. Until then, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation. These systems can be configured to detect and block rogue requests to the vulnerable endpoints, thus limiting the potential damage an attacker can inflict.
In conclusion, CVE-2025-43983 is a highly critical vulnerability that can lead to serious security breaches if not properly addressed. It is crucial for organizations using these devices to implement the recommended mitigation strategies and to stay vigilant about future updates from the vendor.