EUVD-2025-17476

Comprehensive Technical Analysis of EUVD-2025-17476

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified as EUVD-2025-17476 pertains to an "Unrestricted Upload of File with Dangerous Type" in the SUMO Affiliates Pro plugin developed by FantasticPlugins. This vulnerability allows attackers to upload malicious files, potentially leading to severe security breaches. The CVSS (Common Vulnerability Scoring System) base score of 10.0 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 low 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:C (Scope: Changed): The vulnerability affects components beyond the security scope.
• C:H (Confidentiality: High): There is a high impact on confidentiality.
• I:H (Integrity: High): There is a high impact on integrity.
• A:H (Availability: High): There is a high impact on availability.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector is the unrestricted file upload functionality in the SUMO Affiliates Pro plugin. 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.
• Reverse Shells: Uploading scripts that establish reverse shells, allowing attackers to control the server remotely.
• Data Exfiltration: Uploading scripts that exfiltrate sensitive data from the server.

3. Affected Systems and Software Versions

The vulnerability affects all versions of SUMO Affiliates Pro from n/a through 10.7.0. This includes any WordPress installation that has this plugin installed within the specified version range.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following steps are recommended:

• Update the Plugin: Ensure that the SUMO Affiliates Pro plugin is updated to a version that addresses this vulnerability.
• Implement File Upload Restrictions: Configure the server to restrict file uploads to specific file types and sizes.
• Use Web Application Firewalls (WAF): Deploy WAFs to monitor and block suspicious file uploads.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.
• Monitor Logs: Continuously monitor server logs for any suspicious activities related to file uploads.

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 using the SUMO Affiliates Pro plugin are at risk of data breaches, unauthorized access, and potential financial losses. The high CVSS score underscores the urgency for immediate action to mitigate the risk.

6. Technical Details for Security Professionals

• Vulnerability Type: Unrestricted Upload of File with Dangerous Type
• Affected Software: SUMO Affiliates Pro plugin for WordPress
• Affected Versions: n/a through 10.7.0
• Exploitation: Attackers can upload malicious files through the plugin's file upload functionality.
• Detection: Monitor server logs for unusual file upload activities and scan for unexpected file types in the upload directory.
• Patch: Ensure the plugin is updated to a version that includes a fix for this vulnerability.
• References:
  • Patchstack Vulnerability Report
  • NVD CVE-2025-32291

Conclusion

The EUVD-2025-17476 vulnerability in the SUMO Affiliates Pro plugin poses a critical risk to organizations using this plugin. Immediate action is required to update the plugin and implement additional security measures to prevent exploitation. Regular monitoring and security audits are essential to maintain a robust cybersecurity posture.