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CVE-2025-47751: Critical Out-of-Bounds Write Vulnerability in V-SFT Software

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Overview

This blog post is devoted to a newly discovered vulnerability, CVE-2025-47751, that affects versions 6.2.5.0 and earlier of V-SFT software. This vulnerability is a critical security flaw that can lead to significant damage, including system crashes, information disclosure, and arbitrary code execution. As a critical part of many businesses‘ operational infrastructure, V-SFT software is a prime target for cybercriminals. Its exploitation can expose sensitive information and disrupt operations, making this vulnerability a significant concern that demands immediate attention and action.

Vulnerability Summary

CVE ID: CVE-2025-47751
Severity: High (7.8 CVSS Score)
Attack Vector: Local Network
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise and data leakage

Affected Products

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Product | Affected Versions

V-SFT | v6.2.5.0 and earlier

How the Exploit Works

The CVE-2025-47751 vulnerability stems from an out-of-bounds write issue in the VS6EditData!CDataRomErrorCheck::MacroCommandCheck function of V-SFT software. An attacker can exploit this vulnerability by engineering a specially crafted V7 or V8 file that, when opened, triggers the out-of-bounds write, leading to system crashes, information disclosure, and arbitrary code execution. This vulnerability can be exploited by anyone with network access and does not require high-level privileges, making it a significant threat.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. This pseudo-code demonstrates the creation and sending of a malicious V7 or V8 file to the vulnerable system:

# Create a malicious V7 or V8 file
echo "malicious_code" > exploit.v7
# Send this file to the target system
scp exploit.v7 target_system:/path/to/vulnerable/directory

Please note that the above example is simply illustrative and does not represent the actual code used to exploit this vulnerability.

Mitigation Guidance

Users of affected V-SFT versions are strongly recommended to apply the vendor-provided patch as soon as possible to mitigate this vulnerability. If immediate patching is not possible, users are advised to use Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) as temporary mitigation measures while preparing for patch application. Regularly updating and patching software is critical to protect your systems from such vulnerabilities.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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