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CVE-2025-3621: Critical Vulnerability in ActADUR Local Server Product Allowing Remote Code Inclusion

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Overview

The cybersecurity landscape is regularly marred by the discovery of new vulnerabilities. One such critical vulnerability, designated as CVE-2025-3621, has been discovered in the ActADUR local server product developed by ProTNS. This security flaw has the potential to put a substantial amount of sensitive data at risk and could potentially allow unauthorized users to execute arbitrary code on host systems. Given the widespread use of ActADUR in various IT infrastructures, this vulnerability is a serious concern that merits immediate attention.

Vulnerability Summary

CVE ID: CVE-2025-3621
Severity: Critical (CVSS Score: 9.6)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

ActADUR Local Server | Versions from v2.0.1.9 to v2.0.2.0

How the Exploit Works

The vulnerability stems from several weaknesses in the ActADUR local server product. Firstly, the system fails to neutralize special elements used in a command, allowing command injection. Additionally, the use of hard-coded credentials allows unauthorized users to gain access to the system. Furthermore, the system has flaws in its authentication process, and it binds to an unrestricted IP address, both of which contribute to the overall vulnerability of the system.

Conceptual Example Code

The following is a simplified example of how an attacker could exploit this vulnerability:

POST /ActADUR/endpoint HTTP/1.1
Host: vulnerable.system.com
Content-Type: application/json
{
"command": "; rm -rf /;"
"credentials": "hardcoded_user:hardcoded_password"
}

In this example, the attacker sends a JSON payload containing a command to delete all files in the system’s root directory, taking advantage of the command injection vulnerability. The hardcoded credentials are also used to bypass the system’s authentication process.

Mitigation

Users are strongly advised to update their ActADUR local server product to version v2.0.2.0 or above. In the meantime, as a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may be used. ProTNS has released a patch to address this vulnerability, and users are urged to apply this patch as soon as possible to protect their systems and maintain the integrity of their data.

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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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