Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://boschko.ca/g1-ble-rce/
- https://github.com/OlivierLaflamme/UniBLEed
- https://www.vulncheck.com/advisories/unitree-g1-edu-unauthenticated-rce-via-dds-
FAQ
What is CVE-2026-76639?
CVE-2026-76639 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 wea...
How severe is CVE-2026-76639?
CVE-2026-76639 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-76639?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.