Description
The Reachy Mini Bluetooth service asks a connecting device for a PIN before it will accept commands. The check protects the session but not the caller, so an attacker in Bluetooth range can ride along on someone else's successful authentication.



The authenticated state is kept in a single shared flag on the service instance rather than per device. BlueZ passes the calling device's identity to the characteristic write handler in the options argument, but WriteValue(self, value, options) in src/reachy_mini/daemon/app/services/bluetooth/bluetooth_service.py ignores options entirely. The handler therefore has no idea which device sent a given write, and it cannot tell the authenticated one from any other.



Once any device completes the PIN exchange, the flag is set and every nearby device can send CMD_ commands until it resets. An attacker simply waits within radio range for a legitimate user to authenticate, then writes commands into the same window. No PIN is ever guessed or brute-forced.



This is the second step of a three-step chain that JFrog documented against the robot. The first is the unrestricted file upload in the media sounds API, tracked as CVE-2026-55419, which places an attacker-controlled script on the filesystem. This issue then provides command access over Bluetooth. The third is the Bluetooth command handler path traversal, tracked as CVE-2026-62661, which runs that script as root.
Published: 2026-09-23
Score: 6.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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History

Wed, 23 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Pollen-robotics
Pollen-robotics reachy Mini
Vendors & Products Pollen-robotics
Pollen-robotics reachy Mini

Wed, 23 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
Description The Reachy Mini Bluetooth service asks a connecting device for a PIN before it will accept commands. The check protects the session but not the caller, so an attacker in Bluetooth range can ride along on someone else's successful authentication. The authenticated state is kept in a single shared flag on the service instance rather than per device. BlueZ passes the calling device's identity to the characteristic write handler in the options argument, but WriteValue(self, value, options) in src/reachy_mini/daemon/app/services/bluetooth/bluetooth_service.py ignores options entirely. The handler therefore has no idea which device sent a given write, and it cannot tell the authenticated one from any other. Once any device completes the PIN exchange, the flag is set and every nearby device can send CMD_ commands until it resets. An attacker simply waits within radio range for a legitimate user to authenticate, then writes commands into the same window. No PIN is ever guessed or brute-forced. This is the second step of a three-step chain that JFrog documented against the robot. The first is the unrestricted file upload in the media sounds API, tracked as CVE-2026-55419, which places an attacker-controlled script on the filesystem. This issue then provides command access over Bluetooth. The third is the Bluetooth command handler path traversal, tracked as CVE-2026-62661, which runs that script as root.
Title Reachy Mini Bluetooth PIN authentication can be bypassed by racing an authenticated device
Weaknesses CWE-287
CWE-362
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}


Subscriptions

Pollen-robotics Reachy Mini
cve-icon MITRE

Status: PUBLISHED

Assigner: JFROG

Published:

Updated: 2026-09-23T13:58:37.766Z

Reserved: 2026-09-23T09:53:09.797Z

Link: CVE-2026-96456

cve-icon Vulnrichment

Updated: 2026-09-23T13:56:07.423Z

cve-icon NVD

Status : Deferred

Published: 2026-09-23T11:17:18.843

Modified: 2026-09-23T19:42:02.350

Link: CVE-2026-96456

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T16:30:07Z

Weaknesses
  • CWE-287

    Improper Authentication

  • CWE-362

    Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')