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.

Unitree G1 EDU firmware versions through 1.5.2 contain multiple chained vulnerabilities in the BLE GATT server and WiFi provisioning stack. Unauthenticated proximate attackers can achieve root code execution without pairing or credentials. The attack chain exploits an unquoted heredoc variable in the WiFi provisioning script combined with a buffer overflow in the SSID chunk accumulator. Crafted BLE writes overflow a fixed BSS buffer, corrupting an adjacent mainloop function pointer dispatch entry. The corrupted pointer is subsequently invoked by the cleanup path, passing attacker-controlled data to system() as uid 0. No authentication or prior pairing is required, making this exploitable by any nearby Bluetooth-capable attacker. A proof-of-concept tool called UniBLEed has been published on GitHub.