Rust’s ownership model and type system give developers confidence that many classic memory bugs are impossible. Yet, when a web service talks to the outside world—HTTP payloads, database rows, or binary blobs—subtle buffer overflows can still surface. These bugs usually come from unsafe blocks, FFI, or crates that expose raw pointers. In this post we dig into how such overflows arise in real‑world Rust services, show how to surface them with modern tooling, and outline practical mitigation steps that fit into a production pipeline.