CVE-2026-27509 Unitree Go2 Missing DDS Authentication Enables Adjacent RCE
An adjacent attacker can execute arbitrary code as root on Unitree Go2 robots by publishing unauthenticated DDS messages, requiring a firmware update.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-27509?
CVE-2026-27509 is a high-severity missing authorization vulnerability in UnitreeRobotics Unitree Go2, published on 26 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-306
Which versions are affected by CVE-2026-27509?
It affects 2 products.
Products include Unitree Go2 Edu Firmware, Unitree Go2 Firmware.
How do I fix CVE-2026-27509?
No fix has been published for CVE-2026-27509 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-27509 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27509 exists.
Sources
Also known as GHSA-hcv4-2wj7-9p5g.