CVE-2026-4216 in SmartLog App
Summary
by MITRE • 03/16/2026
A weakness has been identified in i-SENS SmartLog App up to 2.6.8 on Android. This affects an unknown function of the component air.SmartLog.android. This manipulation causes hard-coded credentials. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The vendor explains: "The function referenced in the report currently exists in our deployed system. It is related to a developer mode used during the configuration process for Bluetooth pairing between the blood glucose meter and the SmartLog application. This function is intended for configuration purposes related to device integration and testing. (...) [I]n a future application update, we plan to review measures to either remove the developer mode function or restrict access to it."
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Analysis
by VulDB Data Team • 05/09/2026
The vulnerability identified in i-SENS SmartLog App version 2.6.8 and earlier represents a critical security flaw that exposes hard-coded credentials within the air.SmartLog.android component. This weakness specifically targets a function designed for developer mode during Bluetooth pairing processes between blood glucose meters and the SmartLog application. The flaw exists within a configuration mechanism intended for device integration and testing purposes, but has been improperly implemented to store sensitive authentication information in plain text within the application code. The presence of hard-coded credentials fundamentally violates security best practices and creates a significant risk vector for unauthorized access to medical device data and patient information.
The technical implementation of this vulnerability stems from the improper handling of authentication mechanisms within the developer mode function. When developers implement testing and configuration modes, they must ensure that any credentials or access tokens used during development are not permanently embedded within the application binary. This particular flaw demonstrates a failure in secure coding practices where sensitive information was stored in a manner that makes it easily accessible to any user with local access to the device. The attack vector requires only local execution, meaning that an attacker with physical access to a compromised device or someone who has already gained local privileges can extract these hard-coded credentials and potentially use them to access connected medical devices or the associated patient data repositories.
The operational impact of this vulnerability extends beyond simple credential exposure, as it creates potential pathways for data breaches involving sensitive medical information. The SmartLog application serves as a critical interface for blood glucose monitoring data, which constitutes protected health information under regulations such as HIPAA and GDPR. The exposure of hard-coded credentials could enable attackers to access patient records, manipulate device configurations, or potentially intercept data transmission between the glucose meter and the application. This vulnerability also represents a significant concern for healthcare organizations and patients who rely on these devices for critical health management, as it creates an attack surface that could compromise the integrity and confidentiality of medical data. The fact that this exploit has been made publicly available increases the risk profile significantly, as it removes the requirement for advanced technical skills to exploit the vulnerability.
The security implications of this flaw align with CWE-798, which addresses the use of hard-coded credentials, and represents a clear violation of the principle of least privilege and secure configuration management. The vulnerability also relates to ATT&CK technique T1552.001, which covers credentials from password storage providers, as the hard-coded credentials essentially function as stored passwords that can be extracted by local attackers. Organizations should implement immediate mitigations including removing or restricting access to the developer mode function, implementing proper credential management practices, and conducting comprehensive security reviews of all application components that may contain embedded authentication information. The vendor's planned future update to either remove or restrict access to the developer mode function represents an appropriate remediation approach that addresses the root cause of the vulnerability while maintaining necessary functionality for legitimate development and testing purposes.