---
id: CVE-2026-76639
title: >-
  Unitree G1 EDU firmware through 1.5.2 contains an unauthenticated remote code
  execution vulnerability that allows network-adjacent attackers to execute
  arbitrary commands as root by chaining three weaknesses: an unauthenticated
  WebRTC-to…
summary: >-
  Unitree G1 EDU firmware through 1.5.2 contains an unauthenticated remote code
  execution vulnerability that allows network-adjacent attackers to execute
  arbitrary commands as root by chaining three weaknesses: an unauthenticated
  WebRTC-to…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
  - CWE-306
published: '2026-08-27'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:23:49.880'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76639'
references:
  - url: 'https://boschko.ca/g1-ble-rce/'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/OlivierLaflamme/UniBLEed'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/unitree-g1-edu-unauthenticated-rce-via-dds-bridge-and-path-traversal
    label: disclosure@vulncheck.com
tags:
  - nvd
  - exploit-available
epss: 0.00673
epssPercentile: 0.50005
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/OlivierLaflamme/UniBLEed'
  checkedAt: '2026-09-26T09:06:00.267Z'
exploitAvailable: true
ingestedAt: '2026-09-08T21:11:12.285Z'
---

## Overview

Unitree G1 EDU firmware through 1.5.2 contains an unauthenticated remote code execution vulnerability that allows network-adjacent attackers to execute arbitrary commands as root by chaining three weaknesses: an unauthenticated WebRTC-to-DDS bridge on TCP port 9991, a static AES-128 key stored with world-readable permissions, and a path traversal flaw in the chat_go knowledge upload API. Attackers can publish DDS control messages to restart the bashrunner service, plant a malicious payload in its script execution directory via path traversal, and trigger execution of that payload as uid 0 through the bashrunner shell subprocess.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.