{"id":9614,"date":"2025-08-03T01:55:47","date_gmt":"2025-08-03T01:55:47","guid":{"rendered":"http:\/\/localhost\/?p=9614"},"modified":"2025-08-03T01:55:47","modified_gmt":"2025-08-03T01:55:47","slug":"microsoft-virtual-hard-disk-vhdx-11-remote-code-execution-rce","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=9614","title":{"rendered":"Microsoft Virtual Hard Disk (VHDX) 11 &#8211; Remote Code Execution (RCE)"},"content":{"rendered":"<h2>Exploit Details<\/h2>\n<h3>Basic Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse; margin-bottom: 20px;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Exploit Title<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Microsoft Virtual Hard Disk (VHDX) 11 &#8211; Remote Code Execution (RCE)<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Exploit ID<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">EDB-ID:52394<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Type<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">exploitdb<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Published<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2025-08-03T00:00:00<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Modified<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2025-08-03T00:00:00<\/td>\n<\/tr>\n<\/table>\n<h3>CVSS Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse; margin-bottom: 20px;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">CVSS Score<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">7.8<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Severity<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd; color: #ff4444; font-weight: bold;\">HIGH<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Vector<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">CVSS:3.1\/AV:L\/AC:L\/PR:N\/UI:R\/S:U\/C:H\/I:H\/A:H<\/td>\n<\/tr>\n<\/table>\n<h3>CVE Information<\/h3>\n<div style=\" padding: 15px; border: 1px solid #ddd; margin-bottom: 20px;\">\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li>CVE-2025-49683<\/li>\n<\/ul>\n<\/div>\n<h3>Exploit Description<\/h3>\n<div style=\" padding: 15px; border-left: 4px solid #4CAF50; margin-bottom: 20px;\">\nTitles:&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;\n<\/div>\n<h3>Exploit Code<\/h3>\n<div style=\" color: #d4d4d4; padding: 15px; border: 1px solid #ddd; margin-bottom: 20px; font-family: 'Courier New', monospace; white-space: pre-wrap; overflow-x: auto;\">\n# Titles: Microsoft Virtual Hard Disk (VHDX) 11 &#8211; Remote Code Execution (RCE)<br \/>\n<br \/># Author: nu11secur1ty<br \/>\n<br \/># Date: 07\/23\/2025<br \/>\n<br \/># Vendor: Microsoft<br \/>\n<br \/># Software: https:\/\/www.microsoft.com\/en-us\/windows\/windows-11?r=1<br \/>\n<br \/># Reference: https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2025-49683<br \/>\n<br \/># Base Score: 7.8 HIGHVector:  CVSS:3.1\/AV:L\/AC:L\/PR:N\/UI:R\/S:U\/C:H\/I:H\/A:H<\/p>\n<p>## Overview<\/p>\n<p>This PowerShell script (`vdh.ps1`) demonstrates a **soft corruption<br \/>\n<br \/>vulnerability** in Windows Virtual Hard Disk (VHDX) handling, related to<br \/>\n<br \/>**CVE-2025-49683**.<\/p>\n<p>The script performs the following:<\/p>\n<p>&#8211; Creates a new dynamic VHDX file (virtual disk) of 10MB size.<br \/>\n<br \/>&#8211; Mounts the VHDX as a new drive in the system.<br \/>\n<br \/>&#8211; Initializes, partitions, and formats the virtual disk with NTFS.<br \/>\n<br \/>&#8211; Dismounts the VHDX and applies **soft byte-level corruption** at an 8 KB<br \/>\n<br \/>offset inside the VHDX file.<br \/>\n<br \/>&#8211; Re-mounts the corrupted VHDX to observe potential filesystem or mounting<br \/>\n<br \/>errors.<br \/>\n<br \/>&#8211; Lists the contents of the corrupted volume to show the impact.<br \/>\n<br \/>&#8211; Creates an **immediate restart batch script (`your-salaries.bat`)**<br \/>\n<br \/>inside the mounted volume which forces a system restart when executed.<br \/>\n<br \/>&#8211; Offers cleanup options to dismount and delete the corrupted VHDX file.<\/p>\n<p>&#8212;<\/p>\n<p>## Purpose<\/p>\n<p>This PoC is designed for **security researchers and penetration testers**<br \/>\n<br \/>to:<\/p>\n<p>&#8211; Understand how minor VHDX file corruptions can lead to system instability<br \/>\n<br \/>or vulnerability exploitation.<br \/>\n<br \/>&#8211; Demonstrate how CVE-2025-49683 affects VHDX mounting and usage.<br \/>\n<br \/>&#8211; Help develop detection and mitigation strategies for such virtual disk<br \/>\n<br \/>corruption attacks.<\/p>\n<p>&#8212;<\/p>\n<p>## Usage Instructions<\/p>\n<p>1. **Run the script in an elevated PowerShell session** (Run as<br \/>\n<br \/>Administrator &#8211; The already malicious authorized user):<\/p>\n<p>   &#8220;`powershell<br \/>\n<br \/>   .\\vdh.ps1<\/p>\n<p>2. The script will:<\/p>\n<p> &#8211; Create, mount, and format a new VHDX file.<\/p>\n<p>&#8211; Corrupt the file at the byte level.<\/p>\n<p>&#8211; Re-mount and attempt to read the volume.<\/p>\n<p>&#8211; Create a batch file your-salaries.bat inside the mounted drive.<\/p>\n<p>3. To trigger an immediate restart, navigate to the mounted drive (e.g.,<br \/>\n<br \/>D:\\) and run:<\/p>\n<p>&#8220;`<br \/>\n<br \/>your-salaries.bat<br \/>\n<br \/>&#8220;`<\/p>\n<p>4. At script end, press 0 to clean up (dismount and delete the corrupted<br \/>\n<br \/>VHDX), or press any other key to exit and keep the file for further<br \/>\n<br \/>analysis.<\/p>\n<p>### Important Warnings &#038; Considerations<\/p>\n<p>&#8211; Run only on test or isolated environments.<br \/>\n<br \/>This script creates corruption and forcibly restarts the system via the<br \/>\n<br \/>batch file. Do not run on production or important machines.<\/p>\n<p>&#8211; Immediate Restart Batch File<br \/>\n<br \/>The your-salaries.bat file triggers an immediate system restart without any<br \/>\n<br \/>warning or confirmation. Be cautious when executing it.<\/p>\n<p>&#8211; Corruption is simulated and subtle.<br \/>\n<br \/>The corruption at 8 KB offset is a soft corruption intended for<br \/>\n<br \/>demonstration. Real-world attacks could apply more complex modifications.<\/p>\n<p>&#8211; Impact may vary by OS version and environment.<br \/>\n<br \/>Results depend on Windows version and configuration. Some systems may<br \/>\n<br \/>detect and repair corruption automatically.<\/p>\n<p>&#8211; Elevated privileges required.<br \/>\n<br \/>Script requires administrative rights to create, mount, initialize, and<br \/>\n<br \/>corrupt VHDX files.<\/p>\n<p>### Technical Details<\/p>\n<p>&#8211; Corruption offset: 8192 bytes (8 KB) into the VHDX file.<\/p>\n<p>&#8211; Corruption pattern: Byte sequence [0x00, 0xFF, 0x00, 0xFF, 0xDE, 0xAD,<br \/>\n<br \/>0xBE, 0xEF].<\/p>\n<p>&#8211; Disk initialization: MBR partition style with a single NTFS partition.<\/p>\n<p>&#8211; Batch restart command: shutdown \/r \/t 0 \/f to force immediate restart.<\/p>\n<p>### Sample Output<\/p>\n<p>&#8220;`vbnet<br \/>\n<br \/>[*] Checking for existing VHDX file to avoid conflicts&#8230;<br \/>\n<br \/>WARNING: [!] Could not dismount VHDX, maybe not mounted: The path<br \/>\n<br \/>&#8220;C:\\Users\\MicrosoftLoosers\\Desktop\\CVE-2025-49683\\corrupted_test.vhdx&#8221; is<br \/>\n<br \/>not the path to a mounted virtual hard disk file.<br \/>\n<br \/>[*] Removed existing VHDX file.<br \/>\n<br \/>[*] Creating new VHDX (Virtual Hard Disk) file&#8230;<br \/>\n<br \/>    Size: 10 MB<br \/>\n<br \/>    Path:<br \/>\n<br \/>C:\\Users\\MicrosoftLoosers\\Desktop\\CVE-2025-49683\\corrupted_test.vhdx<br \/>\n<br \/>[*] Mounting the new VHDX&#8230;<br \/>\n<br \/>[*] Disk initialized and formatted with NTFS.<br \/>\n<br \/>    This disk emulates a real drive to test mounting and corruption<br \/>\n<br \/>handling.<br \/>\n<br \/>[*] Drive mounted as E:<br \/>\n<br \/>    You can access this drive like a physical hard disk in Windows Explorer.<br \/>\n<br \/>[*] Dismounting the VHDX before applying corruption&#8230;<br \/>\n<br \/>[*] Simulating corruption by modifying bytes at offset 8 KB&#8230;<br \/>\n<br \/>    This models how subtle corruption can affect VHDX file integrity,<br \/>\n<br \/>    which may lead to file system errors or crashes when accessed.<br \/>\n<br \/>[+] Corruption successfully applied.<br \/>\n<br \/>    Note: This is a soft corruption for testing and demonstration purposes<br \/>\n<br \/>only.<br \/>\n<br \/>[*] Re-mounting the corrupted VHDX to observe effects&#8230;<br \/>\n<br \/>[*] Drive letter(s) assigned after corruption: E<br \/>\n<br \/>[*] Listing contents of the mounted drive to detect file system anomalies&#8230;<br \/>\n<br \/>[*] Attempting to list contents of drive E:\\ &#8230;<br \/>\n<br \/>[*] Created immediate restart batch script: your-salaries.bat<br \/>\n<br \/>    Running this batch will force an immediate restart.<\/p>\n<p>[*] Script complete.<br \/>\n<br \/>    This demo showcases how VHDX file corruption at the byte level<br \/>\n<br \/>    can impact system behavior and why patching CVE-2025-49683 is crucial.<\/p>\n<p>[*] Press &#8216;0&#8217; to clean up and remove the corrupted VHDX, or any other key<br \/>\n<br \/>to exit.<br \/>\n<br \/>[*] Cleaning up&#8230;<br \/>\n<br \/>[*] VHDX dismounted.<br \/>\n<br \/>[*] Deleted VHDX file.<br \/>\n<br \/>&#8220;`<\/p>\n<p>### License &#038; Disclaimer<\/p>\n<p>This script is provided for educational and research purposes only. The<br \/>\n<br \/>author and distributor disclaim all liability for any damage caused by<br \/>\n<br \/>misuse.<\/p>\n<p>Use responsibly, and always obtain proper authorization before testing or<br \/>\n<br \/>exploiting vulnerabilities on any system.<\/p>\n<p>### References<\/p>\n<p>[CVE-2025-49683](<br \/>\n<br \/>https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2025-49683)<br \/>\n<br \/>(Windows VHDX file corruption vulnerability)<\/p>\n<p>Microsoft Windows Virtual Hard Disk (VHDX) documentation<\/p>\n<p>Windows PowerShell documentation<\/p>\n<p># Video:<br \/>\n<br \/>[href](https:\/\/www.youtube.com\/watch?v=lkEu_AZnzk4)<\/p>\n<p># Source:<br \/>\n<br \/>[href](<br \/>\n<br \/>https:\/\/github.com\/nu11secur1ty\/CVE-mitre\/tree\/main\/2025\/CVE-2025-49683)<\/p>\n<p># Buy me a coffee if you are not ashamed:<br \/>\n<br \/>[href](https:\/\/www.paypal.com\/donate\/?hosted_button_id=ZPQZT5XMC5RFY)<\/p>\n<p># Source download<br \/>\n<br \/>[href](<br \/>\n<br \/>https:\/\/nu11secur1ty.github.io\/DownGit\/#\/home?url=https:\/\/github.com\/nu11secur1ty\/CVE-mitre\/tree\/main\/2025\/CVE-2025-49683<br \/>\n<br \/>)<\/p>\n<p># Time spent:<br \/>\n<br \/>05:35:00<\/p>\n<p>&#8212;<br \/>\n<br \/>System Administrator &#8211; Infrastructure Engineer<br \/>\n<br \/>Penetration Testing Engineer<br \/>\n<br \/>Exploit developer at https:\/\/packetstormsecurity.com\/<br \/>\n<br \/>https:\/\/cve.mitre.org\/index.html<br \/>\n<br \/>https:\/\/cxsecurity.com\/ and https:\/\/www.exploit-db.com\/<br \/>\n<br \/>0day Exploit DataBase https:\/\/0day.today\/<br \/>\n<br \/>home page: https:\/\/www.nu11secur1ty.com\/<br \/>\n<br \/>hiPEnIMR0v7QCo\/+SEH9gBclAAYWGnPoBIQ75sCj60E=<br \/>\n<br \/>                          nu11secur1ty <http:\/\/nu11secur1ty.com\/><\/p>\n<p>&#8212; <\/p>\n<p>System Administrator &#8211; Infrastructure Engineer<br \/>\n<br \/>Penetration Testing Engineer<br \/>\n<br \/>Exploit developer at https:\/\/packetstorm.news\/<br \/>\n<br \/>https:\/\/cve.mitre.org\/index.html<br \/>\n<br \/>https:\/\/cxsecurity.com\/ and https:\/\/www.exploit-db.com\/<br \/>\n<br \/>0day Exploit DataBase https:\/\/0day.today\/<br \/>\n<br \/>home page: https:\/\/www.nu11secur1ty.com\/<br \/>\n<br \/>hiPEnIMR0v7QCo\/+SEH9gBclAAYWGnPoBIQ75sCj60E=<br \/>\n<br \/>                          nu11secur1ty <http:\/\/nu11secur1ty.com\/>\n<\/div>\n<p><a href=\"https:\/\/www.exploit-db.com\/exploits\/52394\" target=\"_blank\" style=\"display: inline-block;  color: white; padding: 10px 20px; text-decoration: none; border-radius: 4px;\">View Full Exploit Details<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Exploit Details Basic Information Exploit Title Microsoft Virtual Hard Disk (VHDX) 11 &#8211; Remote Code Execution (RCE) Exploit ID EDB-ID:52394 Type exploitdb Published 2025-08-03T00:00:00 Modified&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[6,8,28,12,40,15,13,7,11,5],"class_list":["post-9614","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-cve","tag-cvss","tag-cvss-78","tag-exploit","tag-exploitdb","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Microsoft Virtual Hard Disk (VHDX) 11 - Remote Code Execution (RCE) - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=9614\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Microsoft Virtual Hard Disk (VHDX) 11 - Remote Code Execution (RCE) - zero redgem\" \/>\n<meta property=\"og:description\" content=\"Exploit Details Basic Information Exploit Title Microsoft Virtual Hard Disk (VHDX) 11 &#8211; 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