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CVE-2025-42958: SAP NetWeaver Application Vulnerability in IBM i-series

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Overview

CVE-2025-42958 is a critical security vulnerability that has been identified within the SAP NetWeaver application on IBM i-series. This vulnerability, due to a missing authentication check, can allow high privileged unauthorized users to read, modify, or delete sensitive information. The potential consequences of this vulnerability could be system compromise or data leakage, making it a significant threat to businesses and organizations. Given the widespread usage of SAP NetWeaver in various industries, it is crucial to address this vulnerability promptly to maintain the integrity, confidentiality, and availability of the application.

Vulnerability Summary

CVE ID: CVE-2025-42958
Severity: High (CVSS: 9.1)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: High – unauthorized read, modify, or delete sensitive information; access administrative or privileged functionalities

Affected Products

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Product | Affected Versions

SAP NetWeaver | All versions running on IBM i-series

How the Exploit Works

The exploit leverages a missing authentication check within the SAP NetWeaver application on IBM i-series. This vulnerability allows an attacker to bypass the normal user authentication process, essentially granting them high-level privileges. Once inside, the attacker can read, modify, or delete sensitive information at will. They can also access administrative or privileged functionalities, providing them with significant control over the system and its data.

Conceptual Example Code

Given the nature of this vulnerability, a potential exploit could involve a malicious network request that manipulates the application’s authentication processes. This could look something like:

POST /sap-netweaver/authenticate HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"username": "admin",
"password": "",
"elevatedPrivileges": true
}

In this conceptual example, the malicious request is attempting to authenticate as an ‘admin’ user without providing a password. The ‘elevatedPrivileges’ field is set to ‘true’, implying the request is attempting to gain high-level access.
This is a simplification of the potential exploit. In reality, the attack is likely to be more complex and harder to detect.

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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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