EUVD-2025-18540

Comprehensive Technical Analysis of EUVD-2025-18540

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified as EUVD-2025-18540 pertains to an "Unrestricted Upload of File with Dangerous Type" in the MapSVG plugin developed by RomanCode. This vulnerability allows an attacker to upload a web shell to a web server, potentially leading to full control over the server. The CVSS (Common Vulnerability Scoring System) base score of 9.9 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• AV:N (Network): The vulnerability is exploitable over the network.
• AC:L (Low): The attack complexity is low, meaning it is relatively easy to exploit.
• PR:L (Low): The attacker requires low privileges to exploit the vulnerability.
• UI:N (None): No user interaction is required.
• S:C (Changed): The scope of the vulnerability changes, affecting components beyond the initial vulnerable component.
• C:H (High): Confidentiality impact is high.
• I:H (High): Integrity impact is high.
• A:H (High): Availability impact is high.

Given these metrics, the vulnerability poses a significant risk to any system running the affected versions of the MapSVG plugin.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves uploading a malicious file, such as a web shell, to the web server. This can be achieved through the following steps:

1. Identify the Vulnerable Endpoint: The attacker identifies the endpoint in the MapSVG plugin that allows file uploads.
2. Craft a Malicious File: The attacker creates a file with a dangerous type, such as a PHP web shell.
3. Upload the File: The attacker uploads the malicious file through the vulnerable endpoint.
4. Execute the Web Shell: Once uploaded, the attacker can execute the web shell to gain control over the server.

This method can be automated using scripts or tools designed to exploit file upload vulnerabilities.

3. Affected Systems and Software Versions

The vulnerability affects the MapSVG plugin versions from n/a through 8.5.32. Any system running these versions of the plugin is at risk. This includes:

• WordPress Websites: Given that MapSVG is a WordPress plugin, any WordPress installation using the affected versions is vulnerable.
• Web Servers: The web servers hosting these WordPress installations are also at risk.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following steps should be taken:

1. Update the Plugin: Immediately update the MapSVG plugin to a version that addresses this vulnerability.
2. Implement File Upload Restrictions: Ensure that file uploads are restricted to safe file types and that uploaded files are scanned for malicious content.
3. Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues.
4. Web Application Firewalls (WAF): Deploy WAFs to monitor and block suspicious file uploads.
5. Monitoring and Logging: Implement robust monitoring and logging to detect and respond to any suspicious activities.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of WordPress and its plugins. Organizations and individuals relying on the MapSVG plugin for their web applications are at risk of data breaches, unauthorized access, and potential loss of control over their web servers. This underscores the importance of timely patching and continuous monitoring of web applications.

6. Technical Details for Security Professionals

For security professionals, the following technical details are crucial:

• Vulnerability Identification: The vulnerability is identified as CVE-2025-47559 and EUVD-2025-18540.
• Affected Product: MapSVG plugin by RomanCode.
• Affected Versions: n/a through 8.5.32.
• Exploitation: The vulnerability can be exploited by uploading a file with a dangerous type, such as a PHP web shell.
• Mitigation: Update to a patched version of the plugin and implement additional security measures to restrict file uploads.

References:

• Patchstack Vulnerability Database

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their web applications from potential attacks.