Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://boschko.ca/g1-ble-rce/
- https://github.com/OlivierLaflamme/UniBLEed
- https://www.vulncheck.com/advisories/unitree-g1-edu-ble-gatt-rce-via-wifi-provis
FAQ
What is CVE-2026-76640?
CVE-2026-76640 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 e...
How severe is CVE-2026-76640?
CVE-2026-76640 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-76640?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.