EUVD-2025-23546

Comprehensive Technical Analysis of EUVD-2025-23546

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-23546 pertains to an arbitrary file upload flaw in ZKEACMS v4.1. This vulnerability allows attackers to execute arbitrary code by uploading a specially crafted file. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical. The CVSS vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:

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

Given these metrics, the vulnerability poses a significant risk to any organization using ZKEACMS v4.1.

2. Potential Attack Vectors and Exploitation Methods

Attackers can exploit this vulnerability by:

• Uploading Malicious Files: Crafting a file that contains malicious code and uploading it through the vulnerable file upload functionality.
• Remote Code Execution (RCE): Once the malicious file is uploaded, the attacker can execute arbitrary code on the server, leading to complete control over the system.
• Persistent Access: The attacker can maintain persistent access by installing backdoors or other malicious software.

3. Affected Systems and Software Versions

The vulnerability specifically affects ZKEACMS version 4.1. Other versions of ZKEACMS may also be affected if they share the same codebase or file upload functionality. Organizations using ZKEACMS should verify the version they are running and apply the necessary patches or updates.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following steps are recommended:

• Immediate Patching: Apply the latest security patches provided by the vendor.
• Input Validation: Implement strict input validation and sanitization for file uploads.
• Access Controls: Restrict file upload functionality to authorized users only.
• Monitoring and Logging: Enhance monitoring and logging to detect any suspicious file upload activities.
• Regular Audits: Conduct regular security audits and vulnerability assessments.

5. Impact on European Cybersecurity Landscape

The presence of such a critical vulnerability in a widely-used CMS like ZKEACMS can have significant implications for the European cybersecurity landscape:

• Widespread Exploitation: Attackers can target multiple organizations simultaneously, leading to widespread data breaches and system compromises.
• Compliance Issues: Organizations may face compliance issues with regulations such as GDPR if sensitive data is compromised.
• Reputation Damage: Organizations may suffer reputational damage due to security breaches.
• Economic Impact: The cost of remediation, incident response, and potential legal actions can be substantial.

6. Technical Details for Security Professionals

For security professionals, the following technical details are crucial:

• Detection: Implement intrusion detection systems (IDS) and intrusion prevention systems (IPS) to detect and block malicious file upload attempts.
• File Upload Security: Ensure that file uploads are handled securely by:
  • Validating file types and sizes.
  • Scanning uploaded files for malicious content.
  • Storing uploaded files in a secure location with restricted access.
• Code Review: Conduct a thorough code review of the file upload functionality to identify and fix any security weaknesses.
• Incident Response: Develop and test an incident response plan to quickly address any potential exploitation of this vulnerability.

Conclusion

The arbitrary file upload vulnerability in ZKEACMS v4.1 is a critical issue that requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk. The European cybersecurity community should collaborate to share threat intelligence and best practices to protect against such vulnerabilities.

References

• http://shenzhen.com
• http://zkeacms.com
• https://github.com/CTRLCCT/BoolSpideer/blob/main/cve2.md

Aliases

• CVE-2025-52239

Assigner

• Mitre

EPSS

• N/A

ENISA ID Product

• [{"id":"03f2a196-7ae1-35e4-b62e-f5c1605b14fc","product":{"name":"n/a"},"product_version":"n/a"}]

ENISA ID Vendor

• [{"id":"a96a8c2c-3f58-34af-bced-23e319fac974","vendor":{"name":"n/a"}}]