CVE-2018-10631 in 8840 N'Vision Clinician Programmer
Summary
by MITRE
Medtronic N'Vision Clinician Programmer 8840 N'Vision Clinician Programmer, all versions, and 8870 N'Vision removable Application Card, all versions. The 8840 Clinician Programmer executes the application program from the 8870 Application Card. An attacker with physical access to an 8870 Application Card and sufficient technical capability can modify the contents of this card, including the binary executables. If modified to bypass protection mechanisms, this malicious code will be run when the card is inserted into an 8840 Clinician Programmer.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 06/27/2025
The Medtronic N'Vision Clinician Programmer systems represent critical medical device infrastructure used for programming cardiac rhythm management devices in clinical settings. These systems consist of two primary components: the 8840 Clinician Programmer and the 8870 removable Application Card. The 8840 serves as the primary interface for healthcare professionals to configure and manage implantable cardiac devices, while the 8870 card contains essential software applications that execute on the programmer. The vulnerability exists within the security model of this system architecture, specifically in how the 8840 programmer handles code execution from the removable 8870 card. This design creates a fundamental security weakness where the programmer's trust model allows arbitrary code execution from removable media without proper integrity verification mechanisms.
The technical flaw stems from the absence of cryptographic validation or digital signatures on the executable content stored on the 8870 Application Card. When an attacker gains physical possession of a legitimate 8870 card, they can modify the binary executables contained within it using standard file manipulation techniques. This modification capability directly violates the principle of least privilege and demonstrates a critical failure in the system's code integrity protection mechanisms. The vulnerability allows for privilege escalation through code injection, enabling an attacker to bypass built-in security protections that are designed to prevent unauthorized modifications. According to CWE-119, this represents an improper restriction of operations within a recognized security boundary, while also aligning with CWE-327, indicating the use of weak or broken cryptographic algorithms for code verification. The attack vector requires physical access to the device and sufficient technical expertise, but the attack surface remains extremely dangerous due to the medical device's critical nature.
The operational impact of this vulnerability extends beyond typical cybersecurity concerns due to the medical device environment. Healthcare facilities that utilize these systems face potential risks including unauthorized access to patient data, manipulation of device programming parameters, and possible interference with life-saving medical devices. The vulnerability creates a persistent threat vector that could be exploited by insiders or external attackers who gain physical access to the system. This weakness directly impacts the integrity and availability of medical device programming operations, potentially leading to patient safety risks if malicious code modifies the functionality of the programming interface. The attack could result in unauthorized device configuration changes, data exfiltration, or even device malfunction that could compromise patient care. From an ATT&CK framework perspective, this vulnerability maps to T1059.007 for command and scripting interpreter, T1068 for exploit for privilege escalation, and T1547.001 for registry run keys or startup folder, demonstrating how physical access can be leveraged for broader system compromise.
Mitigation strategies for this vulnerability must address both the immediate security gap and the broader operational environment. Organizations should implement strict physical security controls around medical device components, including secure storage for removable media and access restriction policies. The implementation of cryptographic verification mechanisms for all executable content on removable cards would provide the necessary integrity protection. System administrators should establish regular security assessments and monitoring procedures to detect unauthorized modifications to device components. Additionally, healthcare organizations must maintain comprehensive incident response procedures that account for medical device security breaches, as these incidents could have direct patient safety implications. The vulnerability highlights the need for medical device manufacturers to implement robust security-by-design principles and for healthcare providers to maintain continuous security awareness training for personnel handling critical medical equipment. Regular security updates and patch management procedures should be established to address similar vulnerabilities in medical device ecosystems, ensuring that the security model remains resilient against evolving threat landscapes.