---
id: CVE-2026-76640
title: >-
  Unitree G1 EDU firmware through 1.5.2 contains multiple chained
  vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow
  unauthenticated proximate attackers to achieve root code execution without
  pairing or credentia…
summary: >-
  Unitree G1 EDU firmware through 1.5.2 contains multiple chained
  vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow
  unauthenticated proximate attackers to achieve root code execution without
  pairing or credentia…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
  - CWE-787
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-2026-76640'
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-ble-gatt-rce-via-wifi-provisioning-stack
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00345
epssPercentile: 0.2539
ingestedAt: '2026-09-08T21:11:12.285Z'
---

## Overview

Unitree G1 EDU firmware through 1.5.2 contains multiple chained vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow unauthenticated proximate attackers to achieve root code execution without pairing or credentials by exploiting an unquoted heredoc variable in the WiFi provisioning script and a buffer overflow in the SSID chunk accumulator. Attackers can send crafted BLE writes to overflow a fixed BSS buffer across BLE connections, corrupting an adjacent mainloop function pointer dispatch entry that is subsequently invoked by the cleanup path passing attacker-controlled data to system() as uid 0.

## Remediation

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