An HTTP buffer overflow attack is a type of cyber attack where an attacker sends more data than the server’s software can handle in its buffer, causing the server to crash or execute malicious code. In this type of attack, the attacker sends carefully crafted HTTP requests that contain more data than the server expects, overflowing the buffer and overwriting important memory locations with malicious code. This can allow the attacker to execute arbitrary code on the server, steal sensitive information, or launch other types of attacks.