Description

A vulnerability was identified in Thinkware U3000 up to 1.02.04. Affected is the function get_file of the file /tmp/wpa_supplicant.conf of the component TCP Service. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-09-28T12:17:36.420Z",
  "pubdate": "2026-09-28T12:17:36.420Z",
  "executiveSummary": "A critical security vulnerability exists in the Thinkware U3000 dashcam, affecting firmware versions up to 1.02.04. The vulnerability is classified as improper access control within the TCP Service component. This flaw allows unauthorized, remote actors to interact with sensitive system configuration files. Specifically, the get_file function associated with the /tmp/wpa_supplicant.conf file can be leveraged to exfiltrate system configuration data. The impact is significant, as the exposure of wpa_supplicant.conf typically grants an attacker access to wireless network credentials and potentially other sensitive configuration parameters stored within the device's volatile memory or file system. Because the exploit is publicly available and the vendor has remained unresponsive to disclosure efforts, the risk of exploitation is high. Successful exploitation requires network connectivity to the affected device's TCP service. No user interaction or authentication is explicitly required to facilitate this unauthorized file retrieval, granting remote attackers direct access to sensitive configuration files that should remain restricted to the device operating system or authorized administrative processes.",
  "technicalDetails": "The vulnerability resides within the TCP Service component of the Thinkware U3000 firmware, specifically targeting the get_file function which serves as an interface for file retrieval operations. The root cause of the vulnerability is an insufficient access control mechanism that fails to validate the authorization or the requested path of file retrieval requests coming from the network-accessible TCP service. Consequently, the service allows for unauthorized read access to system files, notably /tmp/wpa_supplicant.conf.\nThe attack flow begins with a remote attacker identifying the active TCP service on the targeted Thinkware U3000 device. By interacting with the service through the exposed port, the attacker invokes the get_file function. The function, lacking adequate verification checks, processes the request to retrieve /tmp/wpa_supplicant.conf from the underlying Linux-based file system. This specific file, wpa_supplicant.conf, is a critical configuration file used by the wpa_supplicant daemon to manage Wi-Fi network connections. It typically contains cleartext or poorly obfuscated Pre-Shared Keys (PSKs) and SSID information associated with the networks the device is configured to join.\nThe exploitation process is straightforward: the attacker sends a specially crafted payload to the TCP service that targets the get_file routine with the path to the configuration file as an argument. The service, operating with elevated system privileges, returns the contents of the file directly to the requester. Because the service does not enforce authentication or privilege verification, the request is fulfilled without resistance. This mechanism essentially bypasses the intended security boundaries of the dashcam’s operating system.\nThe post-exploitation impact includes the total compromise of Wi-Fi credentials used by the device, which facilitates further network-based attacks or unauthorized access to the network the device is connected to. Furthermore, the exposure of configuration details provides an attacker with deeper insight into the device's internal architecture, which may assist in the discovery of further vulnerabilities or persistent exploitation. Given that the service is exposed via the device’s network interface, any remote actor with line-of-sight access to the device's management network can execute this attack. The public availability of the exploit code significantly lowers the barrier to entry for malicious actors, necessitating immediate defensive focus on isolating the device from untrusted networks."
}