EUVD-2025-204071

Comprehensive Technical Analysis of EUVD-2025-204071

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-204071 pertains to an "Unrestricted Upload of File with Dangerous Type" in the RedefiningTheWeb WordPress Contact Form 7 PDF, Google Sheet & Database plugin. This vulnerability allows attackers to upload malicious files, which can lead to severe security breaches. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• AV:N (Attack Vector: Network): The vulnerability is exploitable over the network.
• AC:L (Attack Complexity: Low): The attack requires minimal skill or resources.
• PR:N (Privileges Required: None): No privileges are required to exploit the vulnerability.
• UI:N (User Interaction: None): No user interaction is required.
• S:U (Scope: Unchanged): The vulnerability does not change the security scope.
• C:H (Confidentiality: High): The vulnerability has a high impact on confidentiality.
• I:H (Integrity: High): The vulnerability has a high impact on integrity.
• A:H (Availability: High): The vulnerability has a high impact on availability.

Given these metrics, the vulnerability poses a significant risk to any system using the affected plugin.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector is the unrestricted file upload functionality. Attackers can exploit this vulnerability by:

• Uploading Malicious Scripts: Attackers can upload PHP scripts or other executable files that can be executed on the server.
• Web Shells: Uploading web shells to gain remote access to the server.
• Malware Distribution: Uploading files that contain malware, which can then be distributed to users who download them.
• Data Exfiltration: Uploading scripts that can exfiltrate sensitive data from the server.

3. Affected Systems and Software Versions

The vulnerability affects the WordPress Contact Form 7 PDF, Google Sheet & Database plugin versions from n/a through 3.0.0. Any WordPress site using this plugin within the specified version range is at risk.

4. Recommended Mitigation Strategies

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

• Update the Plugin: Ensure that the plugin is updated to a version that addresses this vulnerability. If no update is available, consider disabling the plugin until a fix is released.
• Implement File Upload Restrictions: Configure the server to restrict the types of files that can be uploaded. Only allow safe file types such as PDFs, images, and documents.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.
• Web Application Firewalls (WAF): Deploy WAFs to monitor and block suspicious file uploads.
• User Education: Educate users about the risks of uploading files from untrusted sources.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant. Given the widespread use of WordPress and its plugins, a critical vulnerability in a popular plugin can affect numerous websites across Europe. This can lead to data breaches, unauthorized access, and potential legal implications under GDPR (General Data Protection Regulation) if sensitive user data is compromised.

6. Technical Details for Security Professionals

For security professionals, the following technical details are crucial:

• Detection: Implement intrusion detection systems (IDS) to monitor for suspicious file upload activities. Look for unusual file types being uploaded or attempts to execute files in unexpected directories.
• Logging and Monitoring: Ensure comprehensive logging of file upload activities. Monitor logs for any anomalies or unauthorized access attempts.
• Incident Response: Develop an incident response plan that includes steps for identifying, containing, and remediating file upload vulnerabilities.
• Patch Management: Establish a robust patch management process to ensure that all plugins and software are kept up-to-date with the latest security patches.
• Code Review: Conduct thorough code reviews of plugins and custom code to identify and fix potential vulnerabilities before deployment.

By addressing these points, organizations can significantly reduce the risk posed by this vulnerability and enhance their overall cybersecurity posture.

Conclusion

The vulnerability described in EUVD-2025-204071 is critical and requires immediate attention. Organizations using the affected plugin should prioritize updating or disabling it until a fix is available. Implementing robust security measures and maintaining vigilant monitoring can help mitigate the risks associated with this vulnerability and protect against potential attacks.