A buffer overrun attempt is a type of security vulnerability that occurs when a program attempts to write data beyond the end of a buffer or memory allocation. This can cause unexpected behavior, such as program crashes, memory corruption, or unauthorized access to sensitive information. Attackers can exploit buffer overrun vulnerabilities to execute arbitrary code, take control of a system, or launch denial-of-service attacks. To prevent buffer overruns, programmers can use secure coding practices, such as input validation, bounds checking, and using safe programming languages like Rust or Go.