The Medtronic MyCareLink Patient Monitor has a vulnerability that allows an attacker with physical access to exploit an internal serial interface. This access provides a login prompt via a UART terminal, posing a risk to the device's security.
The vulnerability has been classified with a CVSS score of 6.8, indicating a medium severity level. This score emphasizes the importance of addressing the issue promptly to prevent unauthorized access to sensitive patient information.
Risk to organizations includes potential exposure of confidential patient data and the integrity of medical devices. Given the nature of medical devices, the availability impact is also crucial, as it can lead to disruptions in patient monitoring.
Currently, the vulnerability status is awaiting analysis, and while there is no known public exploit, organizations should remain vigilant and prioritize remediation to mitigate risks.
Vulnerability Details
This vulnerability allows an attacker with physical access to exploit the internal serial interface of the Medtronic MyCareLink Patient Monitor. The CVE ID is CVE-2025-4386, and it was published on May 7, 2026.
The CVSS score of 6.8 reflects medium severity, with a physical attack vector and a low attack complexity. No privileges are required, and user interaction is not needed to exploit this vulnerability.
The potential impacts include high confidentiality, integrity, and availability risks, making it critical for organizations to address this vulnerability as part of their security protocols.
For further details, please refer to the references provided by Medtronic and CISA regarding the vulnerability.
Technical Analysis
The root cause of this vulnerability is the internal serial interface that can be accessed physically. Attackers may leverage this access to obtain a login prompt.
The attack complexity is low, as no privileges are required, and user interaction is not necessary. This vulnerability can significantly impact confidentiality, integrity, and availability.
Risk & Impact Analysis
Organizations deploying the Medtronic MyCareLink Patient Monitor must recognize the real-world risks associated with this vulnerability. The potential blast radius includes sensitive patient data and operational integrity of the monitoring systems.
Given the CVSS score of 6.8 and a percentile score of 0.068, organizations should address this vulnerability in their priority patch cycle to mitigate risks effectively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected by this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately to address this vulnerability in the Medtronic MyCareLink Patient Monitor. For detailed steps, refer to the vendor's security bulletin.
Detection Guidance
Monitoring for unauthorized physical access and log indicators will help detect potential exploitation attempts.
AppSecure Threat Intelligence Insight
The significance of this vulnerability lies in its potential impact on patient monitoring and data confidentiality. Security teams should review their physical access controls to mitigate similar risks.
For more insights, organizations can explore our penetration testing services to evaluate their defenses.
Additionally, security teams should consider the trends observed in medical device vulnerabilities, particularly in how they can inform future security strategies.
Finally, understanding the patterns of exploitation in similar vulnerabilities can help organizations enhance their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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