CVE-2025-4393

Vulnerability

Overview CVE-2025-4393 is a deserialization of untrusted data vulnerability in Medtronic MyCareLink Patient Monitor models 24950 and 24952. The device contains an internal service that deserializes data without proper validation, enabling a local attacker to craft a malicious binary payload that can corrupt the service's memory.

Exploitation

Conditions Exploitation requires local access to the patient monitor. The attacker must be able to interact with the vulnerable internal service, likely through a physical connection or by running code on the device. No authentication is needed beyond the ability to send crafted data to the service.

Potential

Impact Successful exploitation can lead to a denial of service by crashing the service, or an elevation of privilege, allowing the attacker to gain unauthorized access to sensitive data or manipulate the monitor's functionality [1][2].

Mitigation

Status Medtronic has released security updates to address this vulnerability, which are automatically deployed when the monitor is connected to the internet [2]. Patients should ensure their monitors are plugged in to receive the update.