Unitree Robotics G1 EDU up to 1.5.2 bashrunner service path traversal

Summaryinfo

A vulnerability was found in Unitree Robotics G1 EDU up to 1.5.2. It has been declared as very critical. Impacted is an unknown function of the component bashrunner service. Executing a manipulation can lead to path traversal. This vulnerability is handled as CVE-2026-76639. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Unitree Robotics G1 EDU up to 1.5.2 and classified as very critical. This vulnerability affects some unknown processing of the component bashrunner service. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at boschko.ca. This vulnerability was named CVE-2026-76639 since 08/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/27/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Unitree Robotics

Name

• G1 EDU

Version

• 1.5.0
• 1.5.1
• 1.5.2

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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