CVE-2025-8512 is a medium-severity vulnerability identified in version 2.9.0 of the TVB Big Big Shop App on Android. The root cause lies in the improper export of Android application components due to incorrect processing of the AndroidManifest.xml file within the app's package. Specifically, certain components that should have been restricted or private are instead exported, making them accessible to other local applications or processes on the same device. This misconfiguration can lead to unauthorized access or manipulation of these components. The vulnerability requires local access to the device, meaning an attacker must have some level of access or control over the device to exploit it. No user interaction or elevated privileges beyond local access are necessary, and the attack vector is considered low complexity. The CVSS 4.0 base score is 4.8, reflecting a medium severity level, with partial impacts on confidentiality, integrity, and availability, but limited by the local attack vector and the need for local privileges. The vendor, TVB, was notified early but did not respond or provide a patch, and no known exploits are currently observed in the wild. This vulnerability could be leveraged by malicious local apps or attackers who gain physical or remote local access to the device to escalate privileges, access sensitive data, or interfere with app functionality by exploiting the improperly exported components.

For European organizations, the impact of this vulnerability depends largely on the prevalence of the TVB Big Big Shop App within their user base or employee devices. If the app is used in corporate environments or by employees on Android devices, the improper export of components could allow local attackers or malicious apps to gain unauthorized access to sensitive application functions or data, potentially leading to data leakage or unauthorized operations. This is particularly concerning in organizations with Bring Your Own Device (BYOD) policies or where devices are shared or less strictly controlled. Although the attack requires local access, it could be exploited in scenarios such as compromised devices, insider threats, or through malware that gains local execution. The lack of vendor response and absence of patches increases the risk of exploitation over time. However, the medium severity and local attack vector limit the scope of impact primarily to device-level compromise rather than widespread network or system compromise. Still, organizations handling sensitive customer or business data through this app or related services should consider this vulnerability a risk to confidentiality and integrity at the device level.

To mitigate this vulnerability, European organizations should first assess whether the TVB Big Big Shop App version 2.9.0 is installed on any managed or employee devices. If so, immediate steps include restricting local access to devices by enforcing strong device security policies such as device encryption, screen locks, and mobile device management (MDM) solutions that limit app installations and permissions. Since no patch is currently available, organizations should consider uninstalling or blocking the app until a secure version is released. Additionally, monitoring for unusual local app behavior or privilege escalations on Android devices can help detect exploitation attempts. For developers or IT teams managing Android apps, reviewing AndroidManifest.xml files to ensure components are not unnecessarily exported is critical. Encouraging users to avoid installing apps from untrusted sources and educating them about the risks of local malware can further reduce exposure. Finally, organizations should engage with the vendor or community to push for a timely patch and track updates related to this CVE.