CVE-2026-76640 Unitree G1 EDU 1.5.2 BLE GATT RCE via WiFi Provisioning Stack
Unauthenticated attackers can achieve root code execution on Unitree G1 EDU robots via BLE GATT buffer overflow and command injection in WiFi provisioning.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76640?
CVE-2026-76640 is a high-severity memory corruption vulnerability in Unitree Robotics G1 EDU, published on 27 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Unitree G1 EDU firmware through 1.5.2 contains multiple chained vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow unauthenticated proximate attackers to achieve root code execution without pairing or credentials by exploiting an unquoted heredoc variable in the WiFi provisioning script and a buffer overflow in the SSID chunk accumulator. Attackers can send crafted BLE writes to overflow a fixed BSS buffer across BLE connections, corrupting an adjacent mainloop function pointer dispatch entry that is subsequently invoked by the cleanup path passing attacker-controlled data to system() as uid 0.
Which versions are affected by CVE-2026-76640?
How do I fix CVE-2026-76640?
No fix has been published for CVE-2026-76640 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-76640 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76640 exists.
Sources
Also known as GHSA-4qj2-mfrv-5fm4.