EUVD-2025-203907

Comprehensive Technical Analysis of EUVD-2025-203907

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-203907, also known as CVE-2025-67164, is an authenticated arbitrary file upload vulnerability in the /storage/poc.php component of Pagekit CMS v1.0.18. This vulnerability allows attackers to execute arbitrary code by uploading a crafted PHP file. 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 Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• PR:L (Low Privileges Required): The attacker needs low-level privileges.
• UI:N (No User Interaction): No user interaction is required for the attack to succeed.
• S:C (Changed Scope): The vulnerability can affect resources beyond the security scope managed by the security authority.
• C:H (High Confidentiality Impact): There is a high impact on the confidentiality of the system.
• I:H (High Integrity Impact): There is a high impact on the integrity of the system.
• A:H (High Availability Impact): There is a high impact on the availability of the system.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves an authenticated user uploading a malicious PHP file to the /storage/poc.php component. Once the file is uploaded, the attacker can execute arbitrary code on the server, leading to various malicious activities such as:

• Remote Code Execution (RCE): Executing commands on the server.
• Data Exfiltration: Stealing sensitive information.
• Persistent Backdoors: Establishing long-term access to the system.
• Lateral Movement: Spreading to other systems within the network.

3. Affected Systems and Software Versions

The vulnerability specifically affects Pagekit CMS version 1.0.18. It is crucial to identify all instances of this CMS version running within an organization's infrastructure to assess the potential impact and prioritize remediation efforts.

4. Recommended Mitigation Strategies

1. Patch Management: Immediately update Pagekit CMS to the latest version that addresses this vulnerability.
2. Access Control: Restrict access to the /storage/poc.php component to trusted users only.
3. Input Validation: Implement strict input validation and sanitization for file uploads.
4. Monitoring and Logging: Enhance monitoring and logging to detect any suspicious file upload activities.
5. Network Segmentation: Segment the network to limit the potential impact of a successful exploit.
6. Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.

5. Impact on European Cybersecurity Landscape

The critical nature of this vulnerability poses a significant risk to organizations using Pagekit CMS within the European Union. Given the high severity score and the potential for remote code execution, this vulnerability could lead to data breaches, financial losses, and reputational damage. It underscores the importance of timely patching and robust cybersecurity practices to protect against such threats.

6. Technical Details for Security Professionals

• Vulnerability Type: Authenticated Arbitrary File Upload
• Affected Component: /storage/poc.php in Pagekit CMS v1.0.18
• Exploitation Method: Uploading a crafted PHP file to execute arbitrary code
• CVSS Score: 9.9 (Critical)
• References:
  • NVD Entry
  • GitHub Research

Mitigation Steps:

1. Update CMS: Ensure all instances of Pagekit CMS are updated to the latest version.
2. File Upload Restrictions: Implement strict file type and size restrictions for uploads.
3. Web Application Firewall (WAF): Deploy a WAF to filter out malicious upload attempts.
4. Regular Scanning: Use vulnerability scanners to regularly check for known vulnerabilities.
5. Incident Response Plan: Have a robust incident response plan in place to quickly address any potential breaches.

By following these recommendations, organizations can significantly reduce the risk associated with this vulnerability and enhance their overall cybersecurity posture.