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CVE-2025-4124: Out-Of-Bounds Write Vulnerability in Delta Electronics ISPSoft

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Overview

CVE-2025-4124 is a critical vulnerability that affects Delta Electronics ISPSoft version 3.20. This vulnerability could potentially allow an attacker to execute arbitrary code with an Out-Of-Bounds Write attack when parsing an ISP file. This issue is severe and poses a significant risk to organizations and individuals using the affected software. It could potentially lead to a system compromise or data leakage. Therefore, it is crucial to take immediate action to mitigate the risks associated with this vulnerability.

Vulnerability Summary

CVE ID: CVE-2025-4124
Severity: High, CVSS 7.8
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Execution of arbitrary code, potential system compromise, or data leakage

Affected Products

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Product | Affected Versions

Delta Electronics ISPSoft | 3.20

How the Exploit Works

The vulnerability stems from a flaw in the software’s ability to properly parse ISP files. When an ISP file is loaded, an attacker can manipulate the file to cause an Out-Of-Bounds Write condition. This condition will allow the attacker to write data outside the intended boundary of a fixed-length buffer, leading to a buffer overflow. This can result in the execution of arbitrary code with the privileges of the user running the application.

Conceptual Example Code

While the exact exploit code is not disclosed to prevent misuse, a conceptual example of how the vulnerability might be exploited might look like this:

POST /loadISPFile HTTP/1.1
Host: target.example.com
Content-Type: application/octet-stream
{ "ISP_file": "<malicious_content>" }

In this example, the attacker sends a POST request with a malicious ISP file. If the server running Delta Electronics ISPSoft version 3.20 fails to properly parse this file, it could lead to an Out-Of-Bounds Write condition, thereby allowing the attacker to execute arbitrary code.

Recommended Mitigation

The recommended mitigation for this vulnerability is to apply the patch provided by the vendor. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation. These systems should be configured to detect and block attempts to exploit 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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