CVE-2025-2190 is a high-severity vulnerability affecting the TECNO mobile application identified as com.transsnet.store, specifically version 9.1.0. The vulnerability is categorized under CWE-297, which involves improper validation of certificates with host mismatches. This flaw allows a man-in-the-middle (MitM) attacker to intercept and manipulate the communication between the mobile app and its backend servers. Because the app fails to correctly validate the server's SSL/TLS certificate against the expected hostname, an attacker can present a fraudulent certificate and successfully impersonate the legitimate server. This can lead to the injection of malicious code or commands into the app's data stream, potentially compromising the confidentiality, integrity, and availability of the app's operations and user data. The CVSS v3.1 base score of 8.1 reflects the critical nature of this vulnerability, with network attack vector, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the vulnerability's characteristics make it a significant risk, especially if exploited by sophisticated threat actors. The lack of available patches at the time of publication further increases the urgency for mitigation.

For European organizations, this vulnerability poses a substantial risk, particularly for those relying on the TECNO com.transsnet.store application for business operations, customer engagement, or internal communications. Exploitation could lead to unauthorized data disclosure, manipulation of app behavior, and potential deployment of malicious payloads within corporate environments. This could result in data breaches, operational disruptions, and erosion of trust among users and partners. Given the high confidentiality and integrity impact, sensitive corporate or personal data transmitted via the app could be exposed or altered. The availability impact also suggests potential denial-of-service conditions if the app is destabilized by injected code. Organizations in sectors such as finance, healthcare, and telecommunications, where data security is paramount, may face regulatory and compliance repercussions under GDPR if this vulnerability is exploited. Additionally, the mobile nature of the app increases the attack surface, as users may connect over insecure or public networks, facilitating MitM attacks.

Immediate mitigation should focus on network-level protections and application usage policies. Organizations should enforce the use of trusted VPNs or secure network channels when accessing the app to reduce exposure to MitM attacks. Mobile device management (MDM) solutions can be configured to restrict app usage to devices with updated security configurations and to monitor network traffic for anomalies. Users should be educated to avoid connecting to untrusted Wi-Fi networks when using the app. From a development perspective, TECNO must urgently implement strict certificate validation logic that verifies the server certificate's hostname matches the expected domain, employing certificate pinning where feasible to prevent fraudulent certificates. Until an official patch is released, organizations could consider deploying network intrusion detection systems (NIDS) to detect suspicious MitM activity and potentially block malicious traffic. Regular security assessments and penetration testing focusing on mobile app communications should be conducted to identify and remediate similar weaknesses proactively.