CVE-2020-16237 in SureSigns VS4
Summary
by MITRE
Philips SureSigns VS4, A.07.107 and prior. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties required to process the data safely and correctly.
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Analysis
by VulDB Data Team • 06/05/2025
The vulnerability identified as CVE-2020-16237 affects Philips SureSigns VS4 medical monitoring devices running firmware versions A.07.107 and prior. This issue represents a critical weakness in the device's input validation mechanisms that could potentially compromise patient safety and data integrity within healthcare environments. The affected device is designed for continuous patient monitoring and vital signs assessment, making it a critical component in clinical settings where reliable operation is paramount. The vulnerability stems from insufficient validation of input data that flows into the system's processing mechanisms, creating potential attack vectors that could be exploited by malicious actors.
The technical flaw manifests as a failure to properly validate input data properties before processing, which aligns with CWE-20, "Improper Input Validation," a fundamental weakness in software security that has been consistently identified as a leading cause of system compromise. This vulnerability allows an attacker to potentially inject malformed or unexpected data into the device's processing pipeline, which could result in unpredictable behavior, system instability, or even complete device failure. The lack of proper input validation creates opportunities for attackers to manipulate the device's operation through carefully crafted inputs that may bypass normal security checks and validation routines.
The operational impact of this vulnerability extends beyond simple system malfunction to potentially life-threatening scenarios in medical environments. When a monitoring device fails or behaves unpredictably, it could lead to missed patient alerts, incorrect readings, or complete system failure during critical care situations. Healthcare providers rely on these devices to continuously monitor patient vitals and alert caregivers to deteriorating conditions, making the reliability of such systems absolutely critical. The vulnerability could enable attackers to disrupt patient monitoring, potentially causing delays in medical response or incorrect clinical decisions based on compromised data.
The threat landscape for medical devices has evolved significantly, with cybersecurity frameworks such as those defined in the NIST Cybersecurity Framework and the ISO/IEC 27001 standard highlighting the importance of robust input validation in critical systems. Attackers leveraging this vulnerability might employ techniques from the MITRE ATT&CK framework, specifically targeting the execution and privilege escalation phases to gain deeper access to medical device networks. Organizations should implement comprehensive mitigation strategies including firmware updates, network segmentation, and enhanced monitoring of device communications to reduce the risk of exploitation.
Security professionals should prioritize patch management for affected devices and conduct thorough risk assessments of their medical device ecosystems. The vulnerability demonstrates the critical importance of maintaining up-to-date firmware and implementing proper security controls in healthcare environments where device reliability directly impacts patient outcomes. Regular security testing and vulnerability assessments should be integrated into the operational procedures of healthcare organizations to identify and remediate similar weaknesses before they can be exploited by malicious actors.