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CVE-2026-76639— Unitree G1 EDU 1.5.2 Unauthenticated RCE via DDS Bridge and Path Traversal

Quick assessment

Affected
Unitree Robotics G1 EDU
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

宇树科技（Unitree）G1 EDU 型机器人的固件（版本 1.5.2 及之前版本）存在一个未认证远程代码执行漏洞，允许处于网络邻接位置的攻击者以 root 身份执行任意命令。该漏洞由三个安全缺陷串联而成： 1. 未认证的 WebRTC 到 DDS 桥接服务：在 TCP 9991 端口上运行，无需身份验证即可访问。 2. 静态 AES-128 密钥：密钥以全局可读（world-readable）的权限存储，易被泄露。 3. 聊天_go 知识上传 API 中的路径遍历缺陷：允许通过路径遍历机制写入文件到预期之外的位

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-76639

Vulnerability Information
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Vulnerability Title
Unitree G1 EDU 1.5.2 Unauthenticated RCE via DDS Bridge and Path Traversal
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unitree Robotics G1 EDU 0 ~ 1.5.2 -

II. Public POCs for CVE-2026-76639

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III. Intelligence Information for CVE-2026-76639

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Vendor Advisories for CVE-2026-76639 (1)

Exploits & Public PoCs for CVE-2026-76639 (1)

Other References for CVE-2026-76639 (1)

IV. Related Vulnerabilities

Same product: G1 EDU
Same vendor: Unitree Robotics
Same weakness: CWE-22

V. Comments for CVE-2026-76639

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