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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 discovered a chain of two vulnerabilities in the Unitree G1 humanoid robot that allows for remote, unauthenticated root access. The flaws can be exploited through a combination of Bluetooth, Unitree's cloud infrastructure, and the mobile app, enabling an attacker to compromise a robot and then use it to attack other nearby robots. Unitree has since patched the cloud vulnerability and issued bounties for the discovered flaws.