CVE-2018-10596 in 2090 Carelink Programmer
Summary
by MITRE
Medtronic 2090 CareLink Programmer all versions The affected product uses a virtual private network connection to securely download updates. The product does not verify it is still connected to this virtual private network before downloading updates. An attacker with local network access to the programmer could influence these communications.
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Analysis
by VulDB Data Team • 05/22/2025
The Medtronic 2090 CareLink Programmer represents a critical medical device used for programming insulin pumps and other diabetes management systems. This device operates within healthcare environments where patient safety and data integrity are paramount. The vulnerability exists in the device's update mechanism, specifically in how it handles virtual private network connections during firmware updates. The device establishes a secure connection through a VPN to download updates, but fails to validate that the connection remains active and secure throughout the update process. This design flaw creates a significant security gap that could be exploited by malicious actors within the local network perimeter.
The technical flaw stems from inadequate connection state verification within the device's update protocol. When the CareLink Programmer initiates an update download, it establishes a VPN connection to Medtronic's servers for secure communication. However, the device lacks proper validation mechanisms to confirm that the VPN connection remains intact during the download process. An attacker positioned within the local network can potentially disrupt or manipulate this connection, causing the device to download malicious firmware or corrupted update files. This vulnerability falls under CWE-284, which addresses improper access control, and specifically relates to inadequate verification of network connection integrity. The weakness enables a man-in-the-middle attack scenario where network traffic can be intercepted or modified without detection.
The operational impact of this vulnerability extends beyond simple data corruption, potentially threatening patient safety and medical device functionality. If an attacker successfully manipulates the update process, they could install malicious firmware that alters the device's behavior, potentially leading to incorrect insulin delivery or complete device failure. Healthcare providers using these programmers face significant risks including compromised patient care, regulatory compliance issues, and potential liability concerns. The vulnerability affects all versions of the Medtronic 2090 CareLink Programmer, indicating a fundamental flaw in the device's security architecture rather than a specific version-related issue. This represents a serious concern for healthcare organizations that rely on these devices for critical patient care operations.
Mitigation strategies must address both immediate and long-term security requirements for medical device management. Organizations should implement network segmentation to limit local access to these devices and establish robust network monitoring to detect anomalous connection patterns. The device manufacturer should provide firmware updates that include proper connection verification mechanisms and implement certificate-based authentication for update downloads. Network administrators should consider deploying intrusion detection systems specifically configured to monitor for suspicious update activities. The vulnerability also highlights the need for adherence to healthcare security standards such as those outlined in the NIST Cybersecurity Framework and HIPAA requirements for medical device security. Additionally, this issue aligns with ATT&CK technique T1071.004, which covers application layer protocol: DNS, and demonstrates how network protocol weaknesses can be exploited to compromise device integrity and patient safety through firmware manipulation.