CVE-2025-24996 Overview
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
Critical Impact
This vulnerability poses a risk of spoofing attacks over a network, potentially leading to credential theft or unauthorized access.
Affected Products
- Microsoft Windows 10 1507
- Microsoft Windows 10 1607
- Microsoft Windows 10 1809
Discovery Timeline
- Not Available - Vulnerability discovered by Not Available
- Not Available - Responsible disclosure to Microsoft
- Not Available - CVE CVE-2025-24996 assigned
- Not Available - Microsoft releases security patch
- 2025-03-11 - CVE CVE-2025-24996 published to NVD
- 2025-07-03 - Last updated in NVD database
Technical Details for CVE-2025-24996
Vulnerability Analysis
This vulnerability arises from improper control of file paths or names within the Windows NTLM authentication protocol. An attacker could exploit this flaw by crafting a malicious request that manipulates file paths, leading to spoofing attacks.
Root Cause
The root cause is related to inadequate validation of user input in file paths within the NTLM authentication process, allowing external manipulation.
Attack Vector
Network-based exploitation by sending crafted NTLM authentication requests to the vulnerable system.
# Example exploitation code (sanitized)
Invoke-WebRequest -Uri "http://vulnerable-system/path?file=\malicious\payload" -UseBasicParsing
Detection Methods for CVE-2025-24996
Indicators of Compromise
- Unusual file path requests in NTLM authentication logs.
- Unexpected authentication errors.
- Anomalous network traffic related to NTLM.
Detection Strategies
Leverage network monitoring tools to detect suspicious file path manipulation. Employ intrusion detection systems (IDS) that can recognize anomalous NTLM requests.
Monitoring Recommendations
Regularly inspect authentication logs for unusual file manipulations and monitor network traffic for signs of spoofing activities.
How to Mitigate CVE-2025-24996
Immediate Actions Required
- Disable NTLM where not necessary.
- Enforce strict input validation for file paths.
- Monitor network traffic for suspicious patterns.
Patch Information
Refer to the Vendor Advisory for patch details and updates from Microsoft.
Workarounds
Implement network-level restrictions to limit exposure and use application whitelisting to prevent unauthorized access.
# Configuration example
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0" -Name "NTLMFobHidden" -Value 1
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
