EUVD-2026-9080

Comprehensive Technical Analysis of EUVD-2026-9080

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2026-9080 affects the WeGIA web manager, a tool used by charitable institutions. The issue is a critical Remote Code Execution (RCE) vulnerability in the database restoration functionality. This vulnerability allows an attacker with administrative access to execute arbitrary OS commands on the server by uploading a backup file with a specifically crafted filename.

Severity Evaluation:

• CVSS Base Score: 10.0 (Critical)
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

The high base score indicates that this vulnerability is extremely severe. The attack vector (AV:N) is network-based, requiring no user interaction (UI:N) and low attack complexity (AC:L). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), and the scope is changed (S:C), meaning the vulnerability can affect components beyond its security scope.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Authentication Bypass: An attacker can exploit a previously reported authentication bypass vulnerability to gain administrative access.
2. Database Restoration Functionality: Once administrative access is obtained, the attacker can upload a backup file with a crafted filename to execute arbitrary OS commands.

Exploitation Methods:

1. Gaining Administrative Access: The attacker exploits the authentication bypass vulnerability to gain administrative privileges.
2. Uploading Malicious Backup File: The attacker uploads a backup file with a specifically crafted filename that contains malicious OS commands.
3. Executing Arbitrary Commands: The WeGIA application processes the backup file, leading to the execution of the embedded OS commands on the server.

3. Affected Systems and Software Versions

Affected Software:

• WeGIA Web Manager
• Versions: Prior to 3.6.5

Affected Systems:

• Servers running the WeGIA web manager software.
• Organizations using WeGIA for managing charitable institutions.

4. Recommended Mitigation Strategies

1. Upgrade to the Latest Version: Immediately upgrade to WeGIA version 3.6.5 or later, which includes the fix for this vulnerability.
2. Access Controls: Implement strict access controls to limit administrative access to the WeGIA application.
3. Network Segmentation: Segment the network to isolate critical systems and reduce the attack surface.
4. Monitoring and Logging: Enhance monitoring and logging to detect and respond to suspicious activities.
5. Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential risks.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to charitable institutions using the WeGIA web manager within the European Union. Given the critical nature of the RCE vulnerability, successful exploitation could lead to data breaches, unauthorized access, and disruption of services. This could have severe implications for the trust and integrity of charitable organizations, potentially affecting donations and public support.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2026-28409
• Affected Component: Database restoration functionality
• Exploitation Requirements: Administrative access, which can be obtained via an authentication bypass vulnerability.
• Exploitation Steps:
  1. Gain administrative access through the authentication bypass.
  2. Craft a backup file with a malicious filename containing OS commands.
  3. Upload the backup file through the WeGIA application.
  4. The application processes the backup file, leading to the execution of the embedded OS commands.

References:

• GitHub Security Advisory

Assigner: GitHub_M

ENISA IDs:

• Product: 85a1e527-fed6-3cd8-a0e5-de1efaeb55c4 (WeGIA < 3.6.5)
• Vendor: a7e3b604-9212-3b7f-9c83-d696583021b6 (LabRedesCefetRJ)

EPSS: Not Available

Conclusion: This vulnerability underscores the importance of timely updates and robust security practices. Organizations using WeGIA should prioritize upgrading to the latest version and implementing additional security measures to mitigate the risk of exploitation. The European cybersecurity community should remain vigilant and proactive in addressing such critical vulnerabilities to protect sensitive data and maintain public trust.