CVE-2020-27252 - CVE House

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Status published High CVE-2020-27252

Medtronic MyCareLink Smart Time-of-check Time-of-use Race Condition

8.8 CVSS

Vulnerability Description

Medtronic MyCareLink Smart 25000 is vulnerable to a race condition in the MCL Smart Patient Reader software update system, which allows unsigned firmware to be uploaded and executed on the Patient Reader. If exploited, an attacker could remotely execute code on the MCL Smart Patient Reader device, leading to control of the device.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Sternum, based in Tel Aviv, Israel, discovered and initially reported these vulnerabilities to Medtronic.

References

More from Medtronic

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Medtronic MyCareLink Patient Monitor Data Encryption Weakness

Medtronic MyCareLink Patient Monitor Empty Password Vulnerability

Medtronic MyCareLink Patient Monitor Unencrypted Filesystem Vulnerability

Medtronic MyCareLink Patient Monitor Deserialization Vulnerability

Medtronic MyCareLink Patient Monitor Hardware Debug Port

Affected Vendor

Medtronic

View all reports →

Affected Software

Smart Model 25000 Patient Reader

Vulnerable Versions:

All versions

Timeline

Official Publish: December 14th, 2020

Last Modified: May 22nd, 2025

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1574 Hijack Execution Flow

Privilege Escalation

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1036 Masquerading

Defense Evasion

T1485 Data Destruction

T1005 Data from Local System