The "5416" buffer overflow requires PHP < 5.6.26. If your server is running that, you have bigger problems (Hundreds of known CVEs).
It is 2025, and CVE-2012-1823 was disclosed in 2012. Why does "php 5416 exploit github" remain a popular search?
If you search for this exact term on GitHub today, you will encounter several categories of repositories. Warning: Accessing and using these tools on systems without explicit written permission is illegal and unethical.