Tenda AC1900 AP500(US)_V1_180320(Beta) was discovered to contain a buffer overflow in the 0x32384 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
https://www.tp-link.com/us/support/download/ap500/#Firmware
https://github.com/Davidteeri/Bug-Report/blob/main/tplink-AC1900%20.md