EUVD-2025-209726
GHSA-5jrf-mrg6-w477
CVSS VectorNVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Medtronic MyCareLink Patient Monitor has an internal serial interface, which allows an attacker with physical access to access a login prompt via a UART terminal.
AnalysisAI
Medtronic MyCareLink Patient Monitor models 24950 and 24952 expose an unauthenticated UART login prompt via an internal serial interface, allowing attackers with physical access to potentially gain administrative control without authentication. The vulnerability achieves high confidentiality, integrity, and availability impact (CVSS 6.8) but requires direct physical access to internal hardware connections, limiting real-world exploitation to scenarios involving device tampering or insider threats.
Technical ContextAI
The MyCareLink Patient Monitor contains an internal serial interface (UART/serial port) that provides direct access to a login prompt without authentication requirements. UART (Universal Asynchronous Receiver-Transmitter) is a standard hardware interface used for debugging, maintenance, and system administration on embedded medical devices. CWE-1263 (Improper Physical Access Controls) indicates the root cause is inadequate physical security controls preventing unauthorized individuals from accessing internal hardware interfaces. This vulnerability class affects embedded systems where debug or administrative interfaces are exposed without physical tamper detection or lockdown mechanisms.
RemediationAI
Contact Medtronic for patched firmware versions via the product security advisory - the remediation or patch version number was not provided in available data. Primary mitigations pending vendor firmware release include: physically secure the device in locked equipment cabinets or server rooms with restricted badge access to prevent unauthorized opening; implement audit logging of device physical access and tamper events; restrict UART port physical access by covering or disabling the serial interface connector if not required for legitimate maintenance (trade-off: may complicate future service access); require multi-factor authentication or PIN codes at the UART login prompt once firmware allows such configuration; perform regular physical security audits of all MyCareLink monitors to detect signs of tampering or unauthorized access; implement network-level segmentation to limit lateral movement if an attacker gains UART access and modifies device behavior. Organizations should consult the Medtronic security bulletin and CISA advisory for specific patch availability and timelines.
Share
External POC / Exploit Code
Leaving vuln.today