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CVE-2025-42994: Memory Read Access Violation in SAP MDM Server ReadString Function

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Overview

The Common Vulnerabilities and Exposures (CVE) system has identified a new vulnerability, CVE-2025-42994, which affects the SAP Master Data Management (MDM) Server. This vulnerability pertains to the ReadString function and can be exploited by an attacker to trigger a memory read access violation in the server process. This vulnerability is significant due to its potential to cause unexpected system shutdowns and interrupt the availability of the application.

Vulnerability Summary

CVE ID: CVE-2025-42994
Severity: High (CVSS 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

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Product | Affected Versions

SAP MDM Server | All current versions

How the Exploit Works

The vulnerability is present in the ReadString function of the SAP MDM Server. An attacker can craft special packets that, when processed by the server, trigger a memory read access violation. This violation leads to an unexpected exit of the server process, causing a service disruption and potential data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited:

POST /ReadString HTTP/1.1
Host: vulnerable-sap-mdm-server.com
Content-Type: application/json
{
"specially_crafted_packet": "..."
}

In this example, the “specially_crafted_packet” would contain data designed to trigger the memory read access violation. When the server attempts to process this packet, it could fail and exit unexpectedly.
To mitigate this vulnerability, apply the vendor patch as soon as it becomes available. Until then, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation 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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