$ ctf42

#heap-exploitation CTF challenges

11 CTF challenges using heap-exploitation from 11 CTFs (2018–2025), 11 with writeups. Mostly Pwn (55%) and Misc (45%).

Pwn · 6 Misc · 5

Often combined with

#tcache 3 #got-overwrite 1 #libc-2.27 1 #c++-stl 1 #mimalloc 1 #off-by-one 1 #io-file 1 #race-condition 1 #multithreading 1 #house-of-orange 1 #oob-write 1 #memcmp-leak 1 #oob-read 1 #unlink 1 #unsorted-bin-leak 1

Challenges

Filter and sort these in the challenge browser →

Challenge CTF Weight Category Has
cancelled
#io-file#off-by-one#tcache#heap-exploitation
 UTCTF 2020 – Misc files wu 3
pwn6
#heap-exploitation
 TAMUctf 2019 – Misc files wu 3
EzOrange
#house-of-orange#heap-exploitation#oob-write
 vsCTF 2022 23.32 Pwn files wu 2
cshell2
#heap-exploitation
 corCTF 2022 24.92 Pwn files wu 2
stl_container
#c++-stl#heap-exploitation#tcache#libc-2.27
 De1CTF 2020 24.28 Misc files wu 2
KrampusGifts
#race-condition#tcache#heap-exploitation#multithreading
 X-MAS 2022 – Pwn files wu 1
do_re_mi
#mimalloc#heap-exploitation
 UIUCTF 2025 – Pwn files wu 1
Zoo
#heap-exploitation#unlink#unsorted-bin-leak
 Codegate 2018 Quals 25.00 Misc files wu 1
memory
#heap-exploitation#seccomp#orw
 Securinets 2022 Quals 50.11 Pwn files wu 1
kvstore
#heap-exploitation#oob-read#memcmp-leak
 zer0pts 2022 35.97 Pwn files wu 1
diy
#heap-exploitation#got-overwrite
 Blaze 2019 24.07 Misc files wu 1