Auth bypass in Unitree Go2
CVE-2026-27509
Unitree Go2 firmware versions V1.1.7 through V1.1.9, and V1.1.11 (EDU) do not implement DDS authentication or authorization for the Eclipse CycloneDDS topic rt/api/programming_actuator/request handled by actuator_manager.py. A network-adjacent, unauthenticated attacker can join DDS domain 0 and publish a crafted message (api_id=1002) containing arbitrary Python, which the robot writes to disk under /unitree/etc/programming/ and binds to a physical controller keybinding. When the keybinding is pressed, the code executes as root and the binding persists across reboots.
Vulnerability class: Broken Authentication
EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Unitree Go2
- Unitree Go2_edu
- Unitree Go2_edu_firmware — versions 1.1.11
- Unitree Go2_firmware
- Unitreerobotics Unitree Go2 — versions 1.1.7, 1.1.11, 1.1.11 (EDU only)
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, technical-description, Third Party Advisory, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-27509?
- CVE-2026-27509 is a high-severity vulnerability in Unitree Go2, classified under Missing Authentication for Critical Function. CVSS score: 8.0/10. Published 2026-02-26.
- How severe is CVE-2026-27509?
- High severity. CVSS v3 base score is 8.0 out of 10.