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CVE-2025-47755: Out-of-Bounds Read Vulnerability in V-SFT v6.2.5.0 and Earlier

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Overview

In this blog post, we will delve into the details of a newly discovered vulnerability coded as CVE-2025-47755. This critical flaw has been found in V-SFT v6.2.5.0 and earlier versions, a widely used software package. This vulnerability is concerning due to its potential impacts which include causing a system crash, unauthorized disclosure of sensitive information, and even arbitrary code execution. These impacts underline the importance of timely mitigation and remediation measures, given the broad user base of the impacted software.

Vulnerability Summary

CVE ID: CVE-2025-47755
Severity: High (7.8 CVSS Score)
Attack Vector: File
Privileges Required: None
User Interaction: Required
Impact: System crash, Information disclosure, Arbitrary code execution

Affected Products

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Product | Affected Versions

V-SFT | v6.2.5.0 and earlier

How the Exploit Works

The CVE-2025-47755 exploit centers around an out-of-bounds read issue within the VS6EditData!VS4_SaveEnvFile function in V-SFT v6.2.5.0 and earlier versions. This flaw allows an attacker to create a specially crafted V7 or V8 file, which, when opened in the affected software, triggers an out-of-bounds read error. This error can lead to a system crash, potentially expose sensitive information, and even enable the attacker to execute arbitrary code on the system.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited:

# Create a specially crafted V7 or V8 file
echo "malicious_payload" > exploit.v7
# Use this file with the vulnerable function in the program
./vulnerable_program exploit.v7

This is a simplified representation and actual exploitation would depend on a range of factors such as the specific configurations of the target system and the sophistication of the crafted file. However, this example illustrates the general approach an attacker might take to exploit this vulnerability.

Mitigation Guidance

Users of affected versions of V-SFT are strongly recommended to apply the vendor patch as soon as it becomes available. As a temporary mitigation, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help protect against potential attacks exploiting this vulnerability.

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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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