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cve recordhigh

CVE-2026-76639

Published
CVSS8.8
Severityhigh
WeaknessCWE-22
ExploitedNot in CISA KEV

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

References

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Our coverage of CVE-2026-76639

CVE-2026-76639high

Hack One Robot, Reach the Next: Unitree G1 Security Flaws

A security researcher has uncovered a series of vulnerabilities in the Unitree G1 humanoid robot that could allow an attacker to gain remote root access and potentially compromise other robots within proximity. The researcher, Olivier Laflamme, spent approximately three months investigating the G1 and detailed two distinct vulnerabilities, identified as CVE-2026-76639 and CVE-2026-76640.