$ ctf42

#heap-uaf CTF challenges

2 CTF challenges using heap-uaf from 2 CTFs (2017–2025), 2 with writeups. Mostly Pwn (50%) and Misc (50%).

Pwn · 1 Misc · 1

Often combined with

#ecdsa-nonce-bias 1 #fastbin-attack 1 #libc-leak 1 #double-free 1 #c++ 1

Challenges

Filter and sort these in the challenge browser →

Challenge CTF Weight Category Has
auir CSAW 2017 Quals 24.61 Misc files src wu 3
cratecrack bi0sCTF 2025 95.79 Pwn files wu 1