Buffer Overflow vulnerability in ASUS router RT-AX88U with firmware versions v3.0.0.4.388_24198 allows a remote attacker to execute arbitrary code via the connection_state_machine due to improper length validation for the cookie field.
https://www.asus.com/content/asus-product-security-advisory/
https://gist.github.com/viktoredstrom/cd2580fb0e93e47133b2998553b0a52f