EUVD-2025-38054

Comprehensive Technical Analysis of EUVD-2025-38054

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-38054 pertains to an "Unrestricted Upload of File with Dangerous Type" in the King Addons for Elementor plugin. This vulnerability allows an attacker to upload a web shell to a web server, which can lead to complete control over the affected system. 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 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:C (Scope: Changed): The vulnerability affects a different 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.

Given these factors, the vulnerability is extremely severe and poses a significant risk to any system running the affected software.

2. Potential Attack Vectors and Exploitation Methods

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

• Uploading a Web Shell: The attacker can upload a malicious script (web shell) that allows them to execute arbitrary commands on the server.
• Remote Code Execution (RCE): Once the web shell is uploaded, the attacker can execute commands remotely, leading to full control over the server.
• Data Exfiltration: The attacker can exfiltrate sensitive data, including user credentials, configuration files, and other critical information.
• Lateral Movement: The attacker can use the compromised server as a pivot point to move laterally within the network, compromising other systems.

3. Affected Systems and Software Versions

The vulnerability affects all versions of King Addons for Elementor from an unspecified version through 51.1.36. This includes any WordPress site that uses the King Addons for Elementor plugin within the specified version range.

4. Recommended Mitigation Strategies

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

• Immediate Patching: Upgrade to a patched version of the King Addons for Elementor plugin if available.
• Temporary Disabling: If a patch is not immediately available, consider temporarily disabling the plugin until a fix is released.
• File Upload Restrictions: Implement strict file upload restrictions and validation to prevent the upload of dangerous file types.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file upload attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.
• User Education: Educate users about the risks of uploading files and the importance of following security best practices.

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, including King Addons for Elementor, a large number of websites could be at risk. This vulnerability could be exploited to compromise sensitive data, disrupt services, and potentially lead to data breaches affecting European citizens and organizations. Compliance with regulations such as GDPR could also be at risk, leading to potential legal and financial repercussions.

6. Technical Details for Security Professionals

For security professionals, the following technical details are crucial:

• Detection: Implement monitoring for suspicious file uploads and unusual server activity. Use intrusion detection systems (IDS) and intrusion prevention systems (IPS) to detect and block malicious uploads.
• Incident Response: Develop an incident response plan that includes steps for identifying compromised systems, isolating affected servers, and remediating the vulnerability.
• Forensic Analysis: Conduct forensic analysis to determine the extent of the compromise and identify any data exfiltration or lateral movement.
• Logging and Monitoring: Ensure comprehensive logging and monitoring of file upload activities and server access. Use security information and event management (SIEM) systems to correlate and analyze logs.
• Patch Management: Implement a robust patch management process to ensure timely updates and patches for all software components, including plugins.

By addressing these points, organizations can effectively mitigate the risks associated with EUVD-2025-38054 and enhance their overall cybersecurity posture.