Successful exploitation of these vulnerabilities could lead to system compromise, unauthorized access to sensitive data, and manipulation of the monitor's functionality.
The following Medtronic products are affected:
Medtronic MyCareLink Patient Monitor uses an unencrypted filesystem on internal storage, which allows an attacker with physical access to read and modify files.
CVE-2025-4394 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.8 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2025-4394. A base score of 7.0 has been calculated; the CVSS vector string is (AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Medtronic MyCareLink Patient Monitor has a built-in user account with an empty password, which allows an attacker with physical access to log in with no password and access/modify system functionality.
CVE-2025-4395 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.8 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2025-4395. A base score of 7.0 has been calculated; the CVSS vector string is (AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Medtronic MyCareLink Patient Monitor has an internal service that deserializes data, which allows a local attacker to interact with the service by crafting a binary payload to crash the service or elevate privileges.
CVE-2025-4393 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.5 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2025-4393. A base score of 5.9 has been calculated; the CVSS vector string is (AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N).
Ethan Morchy from Somerset Recon and Carl Mann, an independent researcher, reported these vulnerabilities to Medtronic.
The identified vulnerabilities were reported as low-risk findings. An attacker would need to physically tamper with the monitor to exploit them. In response, starting in June 2025, Medtronic began deploying security updates to address these findings.
Medtronic recommends the following actions:
Users needing additional assistance should contact security@medtronic.com.
For more information regarding these vulnerabilities, refer to Medtronic's security bulletin.
Users should follow CISA's guidance in the following areas:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.