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CVE-2025-45586: Arbitrary File Overwrite Vulnerability in Audi UTR 2.0 Universal Traffic Recorder

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Overview

This report presents a detailed analysis of the CVE-2025-45586 vulnerability, a critical flaw in Audi’s UTR 2.0 Universal Traffic Recorder. This vulnerability affects all users of the software and poses a significant cybersecurity threat due to its potential exploitation leading to system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-45586
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Arbitrary file overwrite leading to potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Audi UTR 2.0 Universal Traffic Recorder | 2.0

How the Exploit Works

The vulnerability stems from a flaw in the software’s handling of PUT requests. An attacker can craft a malicious PUT request that can overwrite files in the system. This can potentially lead to system compromise if critical system files are overwritten, or to data leakage if data files are overwritten with attacker-controlled data.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This example demonstrates a malicious HTTP PUT request sent to the vulnerable endpoint.

PUT /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "file_path": "/critical/system/file", "content": "malicious_content" }

In this example, the PUT request targets a critical system file for overwrite, replacing its content with malicious data.

Mitigation

Users are advised to apply the latest patch from the vendor as soon as possible. As a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to block or alert on malicious PUT requests. However, these measures do not remove the vulnerability but merely reduce the risk of exploitation.

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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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