$ ctf42

Pwn CTF challenges

3,926 Pwn CTF challenges from 382 CTFs (2011–2026), 1,025 with writeups.

Top pwn techniques

#stack-buffer-overflow 95 #format-string 88 #rop 76 #use-after-free 56 #ret2win 55 #shellcode 48 #ret2libc 37 #heap 35 #heap-overflow 34 #tcache-poisoning 29 #got-overwrite 29 #stack-pivot 25 #buffer-overflow 23 #heap-exploitation 21 #seccomp 19

Challenges

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Challenge CTF Weight Has
Uninitialized_VM bi0sCTF 2025 95.79 files
Unlink_THIS LakeCTF 2025 Quals – files
Useless_Agent CPCTF 2025 – files
VALidTOR N0PSctf 2025 24.34 files
VC1K WolvCTF 2025 47.25 files
V_tables Securinets 2025 Quals 70.50 files
Valentine CubeCTF 2025 24.71 files
Vault CyberApocalypse 2025 – files
Vault_2 ScriptCTF 2025 – files
Vault_3 ScriptCTF 2025 – files
Vault_of_Lost_Memories Pragyan 2025 – files
Vaultability BreachCTF 2025 23.86 files
Vector_Madness Kind4SUS 2025 – files
Vexed GreyCatTheFlag 2025 32.92 files
Viewer BuckeyeCTF 2025 – files
Villainous StackSmash 2025 24.00 files
Virtual_Insanity TRX 2025 – files
Virtual_Rift niteCTF 2025 – files
WIC SekaiCTF 2025 55.00 files
Waddler V1T 2025 – files
WakeCall V1T 2025 – files
Wasaaap_2 bi0sCTF 2025 95.79 files
Wherechall CrewCTF 2025 38.93 files
Woody_s_Hidden_Trigger BDSec 2025 15.62 files
Write_Flag_Where MaltaCTF 2025 Quals 24.95 files
Writergate Glacier 2025 – files
Writergate_Warmup Glacier 2025 – files
Wrong_Password CPCTF 2025 – files
XMLTreeDump TSG 2025 – files
XSStorage_1 THCon 2025 – files
Yet_Another_Heap_Challenge m0leCon 2025 Quals 75.00 files
Yudais_Magic idekCTF 2025 52.06 files
Zerodeo PlaidCTF 2025 100.00 files
Zig_Zag_Zoogle Ulisse 2025 24.81 files
a_simple_login CRHC 2025 – files
aaaa bi0sCTF 2025 95.79 files
abhor_re_nt pingCTF 2025 32.50 files
accelerator smileyCTF 2025 48.61 files
alpha NNS 2025 – files
avalonia openECSC 2025 – files