EUVD-2025-27087

Comprehensive Technical Analysis of EUVD-2025-27087

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in EUVD-2025-27087 affects FOG, a widely-used open-source cloning, imaging, rescue suite, and inventory management system. The issue is an authentication bypass vulnerability that allows an attacker to perform an unauthenticated database dump, potentially exposing the entire SQL database without requiring any credentials.

Severity Evaluation:

• Base Score: 9.9 (Critical)
• Base Score Version: 4.0
• Base Score Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

The high base score indicates a critical 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.
• Confidentiality Impact (VC:H): High impact on confidentiality.
• Integrity Impact (VI:H): High impact on integrity.
• Availability Impact (VA:N): No impact on availability.
• Scope Change (SC:H): High scope change.
• Scope Impact (SI:H): High impact on scope.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability over the network without needing physical access to the system.
• Unauthenticated Access: The attacker does not need any credentials to perform the database dump.

Exploitation Methods:

• SQL Injection: The attacker could use SQL injection techniques to extract data from the database.
• Direct Database Access: The attacker could directly access the database through unauthenticated endpoints.

3. Affected Systems and Software Versions

Affected Software:

• FOG versions 1.5.10.1673 and below.

Affected Systems:

• Any system running the affected versions of FOG, including servers used for cloning, imaging, and inventory management.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Upgrade: Upgrade to the latest version of either the dev-branch or working-1.6 branch of FOG. This will patch the vulnerability and protect against immediate exposure.
• Follow Documentation: Refer to the FOG Project documentation for step-by-step upgrade instructions: FOG Project Documentation.

Additional Mitigation:

• Network Segmentation: Implement network segmentation to isolate FOG servers from untrusted networks.
• Firewall Rules: Apply strict firewall rules to limit access to FOG servers.
• Monitoring: Implement continuous monitoring and logging to detect any unauthorized access attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using FOG for cloning, imaging, and inventory management, particularly in sectors such as education, healthcare, and government, where data confidentiality and integrity are critical. The potential for unauthenticated database dumps could lead to data breaches, compromising sensitive information and undermining trust in digital systems.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2025-58443
• GitHub Advisory: GHSA-mvwm-9m2h-87p9
• ENISA ID Product: fogproject (versions ≤ 1.5.10.1673)
• ENISA ID Vendor: FOGProject

Technical Recommendations:

• Patch Management: Ensure that all FOG installations are up-to-date with the latest patches and updates.
• Access Controls: Implement strong access controls and authentication mechanisms to prevent unauthorized access.
• Incident Response: Develop and maintain an incident response plan to quickly address any potential breaches.
• Security Training: Provide regular security training for IT staff to recognize and respond to potential threats.

Conclusion: The authentication bypass vulnerability in FOG versions 1.5.10.1673 and below is critical and requires immediate attention. Organizations should prioritize upgrading to the latest version and implementing additional security measures to mitigate the risk. Continuous monitoring and regular security audits are essential to maintain a robust cybersecurity posture.