CVE-2025-24993: Windows 10 1507 Buffer Overflow Vulnerability

CVE-2025-24993 Overview

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

Critical Impact

Exploitation of this vulnerability allows the attacker to execute arbitrary code with potential escalation of privileges.

Affected Products

• microsoft windows_10_1507
• microsoft windows_10_1607
• microsoft windows_10_1809

Discovery Timeline

• 2025-03-11 - CVE CVE-2025-24993 published to NVD
• 2025-10-27 - Last updated in NVD database

Technical Details for CVE-2025-24993

Vulnerability Analysis

The vulnerability is characterized by a heap-based buffer overflow triggered during the handling of specific NTFS operations. This overflow could allow for unauthorized local code execution, given the right conditions.

Root Cause

The flaw exists due to improper boundary checks in the NTFS driver while processing file system operations, leading to an overflow condition.

Attack Vector

Local

// Example exploitation code (sanitized)
#include <stdio.h>
#include <string.h>

void vulnerable_function(char *input) {
    char buffer[256];
    strcpy(buffer, input); // Potential overflow
}

int main(int argc, char **argv) {
    if (argc > 1) {
        vulnerable_function(argv[1]);
    }
    return 0;
}

Detection Methods for CVE-2025-24993

Indicators of Compromise

• Unexpected file access attempts
• Logs indicating unusual NTFS activity
• Sudden system service terminations

Detection Strategies

Employ behavior-based detection to identify anomalies in file system operations. Utilize memory analysis tools to detect heap corruptions indicative of exploitation attempts.

Monitoring Recommendations

Monitor NTFS-related logs for irregular activities. Use endpoint detection and response solutions to flag any unusual process behaviors.

How to Mitigate CVE-2025-24993

Immediate Actions Required

• Apply the latest security patches from Microsoft.
• Restrict physical access to systems vulnerable to local attacks.
• Implement system integrity checks.

Patch Information

Refer to the Vendor Advisory for patch details and application instructions.

Workarounds

Isolate critical systems from networks and employ access controls to limit local exploit attempts.

# Configuration example
echo "Implement network segment isolation"
sudo ufw enable
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow from 192.168.1.0/24