CVE-2025-5345 is a medium-severity vulnerability affecting Bluebird devices that come pre-installed with the Bluebird file manager application (com.bluebird.filemanagers), specifically version 1.4.4. The vulnerability arises from an improperly exported Android application component, specifically an unsecured AIDL-type service provider named "com.bluebird.system.koreanpost.IsdcardRemoteService". This service is exposed without adequate access controls, allowing a local attacker—someone with physical or local access to the device—to bind to this service. By exploiting this binding, the attacker can perform unauthorized file operations such as copying and deleting arbitrary files on the device's storage with system-level permissions. This effectively bypasses normal Android permission restrictions and grants elevated privileges to the attacker. The vendor has reverted the vulnerable version 1.4.4 back to an older, presumably more secure version 1.3.6, indicating that a patch or secure update is not yet available. The vulnerability is classified under CWE-926 (Improper Export of Android Application Components), which highlights the risk of exposing components that should remain internal. The CVSS 4.0 base score is 6.3, reflecting a medium severity with local attack vector, low attack complexity, no privileges or user interaction required, but with high scope and impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild. This vulnerability is particularly critical because it allows system-level file manipulation, which can lead to data loss, data leakage, or device compromise if leveraged by malicious insiders or attackers with local access.

For European organizations, the impact of this vulnerability depends largely on the deployment of Bluebird devices within their operational environments. Bluebird devices are often used in specialized industrial, logistics, or retail sectors for their ruggedness and specialized features. If these devices are used to handle sensitive data or critical operations, the vulnerability could lead to unauthorized data access, deletion of important files, or disruption of business processes. The ability to manipulate files with system-level permissions could also facilitate further attacks, such as implanting malware or disrupting device functionality. Given the local attack vector, the threat is more pronounced in environments where devices are physically accessible by untrusted personnel or in scenarios where insider threats exist. The lack of a patch means organizations must rely on mitigations until a secure update is released. The high scope impact means that a successful exploit could affect multiple components or data stores on the device, raising concerns about data confidentiality, integrity, and availability. European organizations in sectors like manufacturing, logistics, or field services using Bluebird devices should be particularly vigilant.

1. Immediate mitigation involves restricting physical and local access to Bluebird devices to trusted personnel only, minimizing the risk of local exploitation. 2. Disable or restrict access to the vulnerable service "com.bluebird.system.koreanpost.IsdcardRemoteService" if possible, either through device management policies or by uninstalling or disabling the file manager application if it is not essential. 3. Monitor device logs and behavior for unusual file operations or service bindings that could indicate exploitation attempts. 4. Employ Mobile Device Management (MDM) solutions to enforce strict application control policies and limit installation or execution of unauthorized applications. 5. Regularly audit devices for installed versions of the Bluebird file manager and avoid upgrading to version 1.4.4 until a secure patch is released; consider downgrading to version 1.3.6 as recommended by the vendor. 6. Educate staff about the risks of local device access and enforce strong physical security controls in environments where these devices are deployed. 7. Stay updated with vendor advisories and apply patches promptly once available. 8. For critical deployments, consider network segmentation and data encryption to limit the impact of potential device compromise.