EUVD-2025-202339

Comprehensive Technical Analysis of EUVD-2025-202339

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-202339 affects ColdFusion versions 2025.4, 2023.16, 2021.22, and earlier. It is classified as an "Unrestricted Upload of File with Dangerous Type" vulnerability, which can lead to arbitrary code execution. The CVSS (Common Vulnerability Scoring System) base score of 9.1 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal complexity.
• Privileges Required (PR): High (H) - The attacker needs high-level privileges.
• User Interaction (UI): None (N) - No user interaction is required for exploitation.
• Scope (S): Changed (C) - The vulnerability affects a different 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 the high impact on confidentiality, integrity, and availability, this vulnerability poses a significant risk to affected systems.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves the unrestricted upload of files with dangerous types, such as executable scripts or binaries. An attacker with high privileges can exploit this vulnerability to upload malicious files to the server, which can then be executed to perform arbitrary code execution. This can lead to:

• Remote Code Execution (RCE): The attacker can execute arbitrary code on the server.
• Data Exfiltration: Sensitive data can be accessed and exfiltrated.
• System Compromise: The attacker can gain full control over the affected system.

Exploitation methods may include:

• File Upload Mechanisms: Exploiting file upload forms or APIs that do not properly validate file types.
• Web Shells: Uploading web shells to gain persistent access to the server.
• Script Injection: Uploading and executing malicious scripts to perform various actions on the server.

3. Affected Systems and Software Versions

The vulnerability affects the following versions of Adobe ColdFusion:

• ColdFusion 2025.4
• ColdFusion 2023.16
• ColdFusion 2021.22
• Earlier versions

Organizations using these versions are at risk and should prioritize mitigation efforts.

4. Recommended Mitigation Strategies

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

• Patch Management: Apply the latest security patches provided by Adobe. Refer to the Adobe security bulletin (APSB25-105) for specific patch information.
• Input Validation: Implement strict input validation for file uploads to ensure only safe file types are accepted.
• Access Controls: Restrict access to file upload mechanisms to trusted users only.
• Monitoring and Logging: Enable comprehensive logging and monitoring to detect and respond to suspicious file upload activities.
• Network Segmentation: Segment the network to limit the potential impact of a successful exploitation.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using affected versions of ColdFusion. Given the critical nature of the vulnerability, successful exploitation can lead to severe data breaches, financial losses, and reputational damage. European cybersecurity authorities, such as ENISA, should issue advisories and guidelines to help organizations mitigate the risk. Collaboration between public and private sectors is essential to ensure timely and effective response to this threat.

6. Technical Details for Security Professionals

• Vulnerability Type: Unrestricted Upload of File with Dangerous Type
• CVE ID: CVE-2025-61808
• Affected Product: Adobe ColdFusion
• Affected Versions: 2025.4, 2023.16, 2021.22, and earlier
• Exploitation Requirements: High privileges, no user interaction
• Impact: Arbitrary code execution, complete loss of confidentiality, integrity, and availability
• Mitigation: Apply security patches, implement input validation, restrict access, enable logging and monitoring, segment network, conduct regular audits

Security professionals should prioritize the identification and remediation of this vulnerability in their environments. Regular updates and adherence to best practices in file upload handling are crucial to maintaining a robust security posture.

Conclusion

The vulnerability EUVD-2025-202339 in Adobe ColdFusion is critical and requires immediate attention. Organizations should follow the recommended mitigation strategies to protect their systems and data. Collaboration with cybersecurity authorities and adherence to best practices will help mitigate the risk and ensure a secure cyber environment.