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CVE-2026-76640: Out-of-bounds Write in Unitree Robotics G1 EDU

0
High
VulnerabilityCVE-2026-76640cvecve-2026-76640
Published: 08/27/2026 (08/27/2026, 17:52:11 UTC)
Source: CVE Database V5
Vendor/Project: Unitree Robotics
Product: G1 EDU

Description

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.

CVSS v4.0

Score 7.7high

Attack Vector
Adjacent Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-08-19T14:53:58.575Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a909cffacd9273b49b2d376

Added to database: 08/27/2026, 20:24:31 UTC

Last updated: 08/28/2026, 02:07:15 UTC

Views: 7

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