EUVD-2025-11495

Comprehensive Technical Analysis of EUVD-2025-11495

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified as EUVD-2025-11495 affects Wallos versions 2.38.2 and earlier. This vulnerability is classified as a file upload vulnerability within the restore database function. The severity of this vulnerability is rated at a base score of 9.8 according to CVSS 3.1, indicating a critical risk. The vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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): None (N) - No privileges are required 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) - The vulnerability has a high impact on confidentiality.
• Integrity (I): High (H) - The vulnerability has a high impact on integrity.
• Availability (A): High (H) - The vulnerability has a high impact on availability.

Given these metrics, the vulnerability poses a significant risk to the confidentiality, integrity, and availability of affected systems.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves unauthenticated users exploiting the restore database function by uploading a malicious ZIP file. The contents of this ZIP file are extracted on the server, allowing the attacker to upload and execute arbitrary files, including web shells. Once a web shell is installed, the attacker can execute arbitrary commands on the server, leading to full system compromise.

Potential exploitation methods include:

• Uploading a ZIP file containing a web shell: The attacker can craft a ZIP file with a web shell and upload it through the restore database function.
• Executing arbitrary commands: After uploading the web shell, the attacker can execute commands to gain further control over the server.
• Lateral movement: Once the server is compromised, the attacker can move laterally within the network to compromise other systems.

3. Affected Systems and Software Versions

The vulnerability affects Wallos versions 2.38.2 and earlier. Organizations using these versions are at risk and should prioritize updating to a patched version as soon as possible.

4. Recommended Mitigation Strategies

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

• Immediate Patching: Upgrade to the latest version of Wallos that addresses this vulnerability.
• Access Controls: Implement strict access controls to limit who can access the restore database function.
• Input Validation: Ensure that all file uploads are thoroughly validated and sanitized to prevent malicious files from being uploaded.
• Network Segmentation: Segment the network to limit the potential impact of a compromised server.
• Monitoring and Logging: Implement robust monitoring and logging to detect and respond to any suspicious activities related to file uploads and command execution.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security weaknesses.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant. Organizations across various sectors, including government, healthcare, and finance, may be using Wallos for their database management needs. A successful exploitation of this vulnerability could lead to data breaches, financial losses, and disruptions in critical services. The high base score of 9.8 underscores the urgency for immediate action to mitigate the risk.

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 uploads.
• Incident Response: Develop an incident response plan that includes steps for identifying, containing, and remediating compromised systems.
• Forensic Analysis: Conduct forensic analysis to understand the extent of the compromise and identify any additional vulnerabilities that may have been exploited.
• Patch Management: Ensure that a robust patch management process is in place to quickly apply security updates as they become available.
• User Education: Educate users about the risks associated with file uploads and the importance of following security best practices.

By addressing these technical details, security professionals can enhance the overall security posture of their organizations and reduce the risk of exploitation.

Conclusion

EUVD-2025-11495 represents a critical vulnerability in Wallos that requires immediate attention. Organizations should prioritize patching affected systems, implementing robust security controls, and maintaining vigilant monitoring to protect against potential exploitation. The impact on the European cybersecurity landscape highlights the need for a coordinated and proactive approach to mitigating this risk.