CVE-2025-12047 is a vulnerability identified in the Lenovo Scanner Pro application, classified under CWE-295 for improper certificate validation. The flaw was discovered during an internal security assessment and affects the application's ability to correctly verify SSL/TLS certificates when communicating over a network. This improper validation can be exploited by an attacker positioned on the same logical network segment as the victim to intercept and manipulate network traffic. Specifically, the attacker could perform a man-in-the-middle (MITM) attack to access sensitive user files managed or transmitted by the Scanner Pro application. The vulnerability does not require the attacker to have prior authentication or the victim to perform any interaction, increasing the risk in shared network environments such as corporate LANs or public Wi-Fi. The CVSS 4.0 vector indicates the attack requires adjacent network access (AV:A), high attack complexity (AC:H), no privileges (PR:N), no user interaction (UI:N), and results in high confidentiality impact (VC:H) but no impact on integrity or availability. No patches or known exploits are currently available, but the vulnerability remains a concern due to the sensitive nature of the data handled by scanning applications. The affected version is listed as '0', which likely indicates initial or early releases of the product. The vulnerability's presence highlights the critical need for robust certificate validation in applications handling sensitive data to prevent unauthorized disclosure.

For European organizations, this vulnerability poses a risk primarily to the confidentiality of sensitive scanned documents and user files handled by Lenovo Scanner Pro. In environments where multiple users share the same network segment—such as corporate offices, universities, or public Wi-Fi—an attacker could exploit this flaw to intercept confidential information, potentially leading to data breaches, intellectual property theft, or exposure of personal data. The impact is heightened in sectors with strict data protection regulations like GDPR, where unauthorized disclosure can result in significant legal and financial penalties. The vulnerability does not affect system integrity or availability, limiting its impact to data confidentiality. However, the ease of exploitation is mitigated by the requirement for the attacker to be on the same logical network and the high complexity of the attack, which may reduce widespread exploitation. Nonetheless, organizations relying on Lenovo Scanner Pro for document management should consider this vulnerability a serious concern, especially in sensitive or regulated environments.

1. Network Segmentation: Isolate devices running Lenovo Scanner Pro on separate VLANs or network segments to limit exposure to potential attackers on the same logical network. 2. Use Trusted Networks: Restrict the use of Scanner Pro to trusted, secure networks and avoid operation over public or untrusted Wi-Fi networks. 3. Monitor Network Traffic: Deploy network intrusion detection systems (NIDS) to detect unusual man-in-the-middle or certificate-related anomalies in traffic involving Scanner Pro. 4. Enforce Strong Certificate Policies: Where possible, configure the application or network environment to enforce strict certificate pinning or validation policies to prevent MITM attacks. 5. Vendor Updates: Maintain close communication with Lenovo for patches or updates addressing this vulnerability and apply them promptly once released. 6. User Awareness: Educate users about the risks of using scanning applications on unsecured networks and encourage best practices for data handling. 7. Alternative Solutions: Consider temporary use of alternative scanning solutions with verified secure certificate validation until Lenovo releases a fix.