CVE-2025-24061
📋 TL;DR
This vulnerability allows local attackers to bypass Windows Mark of the Web (MOTW) security protections, which normally warn users about files downloaded from the internet. Attackers could trick users into executing malicious files without security warnings. This affects Windows systems where MOTW is enabled.
💻 Affected Systems
- Windows
📦 What is this software?
Windows 10 1507 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
Windows 11 24h2 by Microsoft
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access could execute arbitrary code by bypassing MOTW warnings, potentially leading to full system compromise through social engineering.
Likely Case
Attackers could deliver malware via downloaded files that appear safe, increasing successful phishing and malware delivery rates.
If Mitigated
With proper user awareness and additional security controls, impact is limited to local privilege escalation attempts.
🎯 Exploit Status
Requires local access and user interaction. No public exploit available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update Guide for specific KB numbers
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24061
Restart Required: No
Instructions:
1. Apply latest Windows security updates from Microsoft Update. 2. For enterprise: Deploy via WSUS or Microsoft Endpoint Configuration Manager. 3. Verify update installation in Windows Update history.
🔧 Temporary Workarounds
Disable MOTW (Not Recommended)
allDisabling MOTW removes the protection entirely, making systems vulnerable to other threats
🧯 If You Can't Patch
- Implement application allowlisting to prevent unauthorized executables
- Enhance user awareness training about opening downloaded files
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for missing security updates related to CVE-2025-24061Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify the security update is installed via Windows Update history or 'systeminfo' command📡 Detection & Monitoring
Log Indicators:
- Windows Security event logs showing MOTW bypass attempts
- Process creation events for unexpected executables
Network Indicators:
- Unusual file downloads followed by immediate execution
SIEM Query:
EventID=4688 AND (ProcessName contains suspicious.exe OR CommandLine contains MOTW bypass indicators)