CVE-2025-24992
📋 TL;DR
This CVE describes a buffer over-read vulnerability in Windows NTFS that allows a local attacker to read beyond allocated memory boundaries. This could lead to information disclosure of sensitive data from system memory. Only Windows systems with NTFS file systems are affected.
💻 Affected Systems
- Windows NTFS
📦 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 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 could read sensitive information from kernel memory, potentially exposing credentials, encryption keys, or other protected data.
Likely Case
Limited information disclosure of adjacent memory contents, possibly revealing file system metadata or partial file contents.
If Mitigated
With proper access controls and least privilege principles, impact is limited to non-sensitive data accessible to the user's privilege level.
🎯 Exploit Status
Requires local access and knowledge of memory layout. CWE-126 indicates buffer over-read vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update Guide for specific patch versions
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24992
Restart Required: Yes
Instructions:
1. Open Windows Update settings
2. Check for updates
3. Install all available security updates
4. Restart system when prompted
🔧 Temporary Workarounds
Restrict local access
windowsLimit local user access to systems where sensitive data is stored
Implement least privilege
windowsEnsure users only have necessary permissions for their roles
🧯 If You Can't Patch
- Implement strict access controls to limit who has local access to affected systems
- Monitor for unusual local file system activity and memory access patterns
🔍 How to Verify
Check if Vulnerable:
Check Windows version and compare against Microsoft's affected versions list in the advisoryCheck Version:
winverVerify Fix Applied:
Verify Windows Update history shows the relevant security patch installed and system has been restarted📡 Detection & Monitoring
Log Indicators:
- Unusual file system operations
- Multiple failed file access attempts
- Processes accessing NTFS system files
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
EventID: 4663 (File system access) with unusual patterns or multiple failures