CVE-2026-75940 in Health Application
Summary
by MITRE • 09/10/2026
A vulnerability was reported in Lenovo Health Android Application, distributed exclusively in the Chinese market, that could allow an attacker to access sensitive health-related information.
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Analysis
by VulDB Data Team • 09/10/2026
The disclosed security flaw resides within the Lenovo Health Android application, a proprietary software component specifically targeted at and distributed for users in the Chinese domestic market. This vulnerability represents a critical failure in data protection mechanisms, allowing unauthorized entities to retrieve sensitive personal health information that should remain strictly confidential. The existence of such an issue highlights significant gaps in the implementation of secure coding practices within mobile applications handling personally identifiable information and protected health data, particularly when deployed in regional markets where security auditing may differ from global standards.
From a technical perspective, this vulnerability likely stems from improper access control or insufficient encryption protocols governing how health metrics are stored locally on the device or transmitted to backend servers. In many Android-based health applications, sensitive data is often cached in local databases or shared preferences without adequate obfuscation or permission checks. An attacker with physical access to an unlocked device could potentially exploit these storage mechanisms to extract medical records, fitness statistics, biometric data, or other private details. Alternatively, if the vulnerability involves network communication flaws, it may allow for man-in-the-middle attacks where unencrypted health data is intercepted during transmission between the application and Lenovo's servers. The core technical deficiency lies in the lack of strict enforcement of Android security best practices, such as using encrypted storage APIs like SQLCipher or ensuring that all intents carrying sensitive payloads are protected with appropriate permissions to prevent leakage through other applications on the same device.
The operational impact of this vulnerability is severe due to the highly sensitive nature of health-related data. Exposure of medical history, diagnostic results, or continuous monitoring metrics can lead to significant privacy violations for end-users. Beyond individual privacy concerns, such breaches can result in reputational damage for Lenovo and potential regulatory penalties under strict data protection laws like China's Personal Information Protection Law (PIPL) or international standards if any global users are affected. Furthermore, attackers could leverage this information for targeted social engineering attacks, identity theft, or insurance fraud, as health data is increasingly valuable on the dark web compared to standard financial credentials in certain contexts.
To mitigate these risks and address the underlying technical flaws, Lenovo must implement immediate remediation strategies focused on strengthening access controls and enhancing data encryption. This includes enforcing strict Android permission models where sensitive activities are protected by custom permissions that prevent other apps from accessing them. Data at rest should be encrypted using strong algorithms such as AES-256 with keys stored in the Android Keystore system to ensure they cannot be easily extracted even if the device is compromised. For data in transit, mandatory use of TLS 1.3 with certificate pinning would prevent interception and tampering. Additionally, implementing robust input validation and secure session management will reduce the attack surface. From a broader security architecture standpoint, this incident underscores the need for regular third-party penetration testing and adherence to industry standards such as CWE-200 (Information Exposure) and CWE-359 (Exposure of Private Information to an Unauthorized Actor). Security teams should also align their response with MITRE ATT&CK techniques related to Data from Local System or Network Service Discovery, ensuring that monitoring and detection mechanisms are in place to identify any potential exploitation attempts. Regular updates pushing these patches to affected devices remain the primary defense against ongoing threats targeting this specific application variant.