CVE-2025-49664
📋 TL;DR
This vulnerability in Windows User-Mode Driver Framework Host allows local attackers to access sensitive information they shouldn't have permission to view. It affects Windows systems with the vulnerable driver framework component. Attackers need local access to exploit this information disclosure flaw.
💻 Affected Systems
- Windows User-Mode Driver Framework Host
📦 What is this software?
Windows 10 1507 by Microsoft
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
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access could extract sensitive system information, driver data, or potentially credentials that could be used for further attacks.
Likely Case
Local users or malware could gather system information to facilitate privilege escalation or lateral movement within the network.
If Mitigated
With proper access controls and monitoring, the impact is limited to information gathering rather than system compromise.
🎯 Exploit Status
Requires local access and some technical knowledge to exploit. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Will be included in Microsoft's monthly security updates
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49664
Restart Required: Yes
Instructions:
1. Apply Microsoft's monthly security updates via Windows Update. 2. For enterprise environments, deploy through WSUS or Microsoft Endpoint Configuration Manager. 3. Restart affected systems after patch installation.
🔧 Temporary Workarounds
Restrict local access
windowsLimit local user access to systems through proper access controls and least privilege principles
Monitor for suspicious activity
allImplement monitoring for unusual local information gathering activities
🧯 If You Can't Patch
- Implement strict access controls to limit who has local access to vulnerable systems
- Deploy enhanced monitoring for information disclosure attempts and suspicious local activity
🔍 How to Verify
Check if Vulnerable:
Check if system has received Microsoft's security update for CVE-2025-49664. Use 'wmic qfe list' to see installed updates.Check Version:
wmic os get caption,version,buildnumberVerify Fix Applied:
Verify the security update KB number for CVE-2025-49664 is installed via Windows Update history or 'wmic qfe list' command.📡 Detection & Monitoring
Log Indicators:
- Unusual local process access to driver framework components
- Multiple failed attempts to access protected memory areas
Network Indicators:
- Not applicable - this is a local vulnerability
SIEM Query:
EventID=4688 AND ProcessName contains 'umdf' OR 'UserModeDriverFramework' AND suspicious access patterns