EUVD-2025-20252

Comprehensive Technical Analysis of EUVD-2025-20252

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-20252, also known as CVE-2025-6794, is a critical directory traversal and remote code execution (RCE) flaw in Marvell QConvergeConsole. The vulnerability arises from improper validation of user-supplied paths in the saveAsText method, allowing attackers to execute arbitrary code without authentication.

Severity Evaluation:

• CVSS Base Score: 9.8
• CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high CVSS score indicates a severe vulnerability due to the following factors:

• Attack Vector (AV:N): Network-based attack.
• Attack Complexity (AC:L): Low complexity required to exploit.
• Privileges Required (PR:N): No privileges required.
• User Interaction (UI:N): No user interaction required.
• Scope (S:U): Unchanged.
• Confidentiality (C:H), Integrity (I:H), Availability (A:H): High impact on all three.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability over the network without needing to be on the same local network as the target.
• Unauthenticated Access: The attacker does not need any credentials to exploit the vulnerability.

Exploitation Methods:

• Directory Traversal: By manipulating the user-supplied path in the saveAsText method, an attacker can traverse directories and access sensitive files.
• Remote Code Execution: The attacker can inject malicious code that gets executed in the context of SYSTEM, leading to full system compromise.

3. Affected Systems and Software Versions

Affected Product:

• Product Name: QConvergeConsole
• Product Version: 5.5.0.78

Vendor:

• Vendor Name: Marvell

All installations of QConvergeConsole version 5.5.0.78 are affected by this vulnerability.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Apply the latest security patches provided by Marvell.
• Network Segmentation: Isolate QConvergeConsole from public networks to limit exposure.
• Access Controls: Implement strict access controls and firewall rules to restrict access to the QConvergeConsole.

Long-Term Mitigation:

• Code Review: Conduct a thorough code review to identify and fix similar vulnerabilities.
• Input Validation: Ensure proper validation of all user-supplied inputs, especially those used in file operations.
• Regular Updates: Keep the software up to date with the latest security patches and updates.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using Marvell QConvergeConsole, particularly those in critical infrastructure sectors such as telecommunications, data centers, and enterprise networks. The potential for unauthenticated remote code execution can lead to widespread disruption and data breaches, impacting the overall cybersecurity posture of affected organizations.

6. Technical Details for Security Professionals

Vulnerability Details:

• Method Affected: saveAsText
• Root Cause: Lack of proper validation of user-supplied paths.
• Exploitation: An attacker can craft a malicious path that traverses directories and executes arbitrary code.

Detection and Response:

• Log Analysis: Monitor logs for unusual file access patterns and directory traversal attempts.
• Intrusion Detection Systems (IDS): Implement IDS rules to detect and alert on suspicious network traffic targeting the saveAsText method.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

References:

• ZDI Advisory: ZDI-25-454
• ENISA ID Product: 429e55d6-7670-3f2d-9dbe-54d1aeddc3f3
• ENISA ID Vendor: d7d7a818-adee-3afd-81c3-2c4df97cb653

Conclusion

EUVD-2025-20252 is a critical vulnerability that requires immediate attention from organizations using Marvell QConvergeConsole. Implementing the recommended mitigation strategies and maintaining vigilant monitoring can help mitigate the risk associated with this vulnerability. The European cybersecurity community should prioritize addressing this issue to protect against potential large-scale attacks.