CVE-2025-64238 identifies a missing authorization vulnerability in the NicolasKulka WPS Bidouille application, a tool used for Wi-Fi Protected Setup (WPS) related configurations. The vulnerability stems from incorrectly configured access control security levels, which fail to properly restrict access to certain functions or data within the application. This allows an attacker with low privileges (PR:L) and network access (AV:N) to exploit the flaw without requiring user interaction (UI:N). The vulnerability impacts confidentiality (C:L) but does not affect integrity or availability. The affected versions include all versions up to and including 1.33.1. The CVSS v3.1 base score is 4.3, indicating a medium severity level. No patches or exploit code are currently publicly available, and no known exploits have been reported in the wild. The vulnerability could allow unauthorized access to sensitive information managed by the WPS Bidouille tool, potentially exposing Wi-Fi configuration details or other sensitive data. The root cause is an incorrect implementation of access control mechanisms, which should enforce strict authorization checks before granting access to sensitive operations or data. Organizations using this tool should review their deployment and access policies to mitigate potential risks.

For European organizations, the primary impact of this vulnerability is the potential unauthorized disclosure of sensitive Wi-Fi configuration information, which could lead to further network compromise or unauthorized network access. While the vulnerability does not directly affect system integrity or availability, the exposure of confidential data can facilitate lateral movement or targeted attacks within corporate networks. Organizations relying on WPS Bidouille for network setup or management may face increased risk if the tool is accessible over the network without proper access controls. This risk is heightened in environments where the tool is deployed in shared or less secure network segments. The medium severity rating suggests that while the threat is not critical, it should not be ignored, especially in sectors with stringent data protection requirements such as finance, healthcare, and critical infrastructure. Failure to address this vulnerability could lead to compliance issues under regulations like GDPR if sensitive data is exposed.

To mitigate CVE-2025-64238, organizations should implement the following specific measures: 1) Restrict network access to the WPS Bidouille application by using network segmentation, firewalls, or VPNs to limit exposure only to trusted administrators. 2) Enforce strong authentication and authorization mechanisms around the tool, ensuring that only authorized personnel with appropriate privileges can access sensitive functions. 3) Conduct a thorough review of the application's access control configurations and apply any available patches or updates from the vendor as soon as they are released. 4) Monitor logs and network traffic for unusual access patterns or attempts to exploit the vulnerability. 5) If possible, disable or remove the WPS Bidouille tool from production environments where it is not strictly necessary. 6) Educate IT staff about the risks associated with misconfigured access controls and the importance of adhering to the principle of least privilege. 7) Consider alternative tools with stronger security postures if WPS Bidouille cannot be adequately secured. These steps go beyond generic advice by focusing on network-level controls, access management, and proactive monitoring tailored to this specific vulnerability.