EUVD-2025-15965

Comprehensive Technical Analysis of EUVD-2025-15965

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-15965 pertains to a stack overflow in the web_aaa_loginAuthlistEdit function of FW-WGS-804HPT v1.305b241111. This issue is triggered via the theauthName parameter. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The CVSS vector 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 skill or resources.
• Privileges Required (PR): None (N) - No special privileges are needed 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) - Complete loss of confidentiality.
• Integrity (I): High (H) - Complete loss of integrity.
• Availability (A): High (H) - Complete loss of availability.

This high severity score underscores the critical nature of the vulnerability, which can lead to significant impacts on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

The stack overflow vulnerability can be exploited through the following methods:

• Remote Code Execution (RCE): An attacker can send a specially crafted request to the web_aaa_loginAuthlistEdit function with a malicious theauthName parameter, leading to arbitrary code execution.
• Denial of Service (DoS): By sending a large amount of data to the theauthName parameter, an attacker can cause the system to crash, resulting in a denial of service.
• Information Disclosure: The stack overflow might allow an attacker to read sensitive information from the stack, leading to unauthorized access to confidential data.

3. Affected Systems and Software Versions

The vulnerability specifically affects:

• FW-WGS-804HPT v1.305b241111

It is crucial to identify all systems running this specific version of the firmware and prioritize their update or mitigation.

4. Recommended Mitigation Strategies

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

• Patch Management: Immediately apply the latest firmware update provided by the vendor.
• Network Segmentation: Isolate affected systems from critical networks to limit the potential impact of an exploit.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious network activity targeting the web_aaa_loginAuthlistEdit function.
• Input Validation: Implement strict input validation and sanitization for all user inputs, especially for the theauthName parameter.
• Access Controls: Enforce strict access controls to limit exposure to the vulnerable function.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using the affected firmware. Given the critical nature of the vulnerability, it could be exploited by threat actors to compromise network security, exfiltrate sensitive data, or disrupt services. This underscores the need for robust cybersecurity measures and timely patch management across the European Union.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Function: web_aaa_loginAuthlistEdit
• Vulnerable Parameter: theauthName
• Exploitation Method: Stack overflow via crafted input to the theauthName parameter.
• References:
  • NVD Entry
  • Technical Analysis

Security professionals should review the provided references for detailed technical analysis and exploitation methods. It is advisable to conduct thorough testing in a controlled environment before deploying mitigation strategies to ensure they do not introduce additional vulnerabilities or operational issues.

Conclusion

EUVD-2025-15965 represents a critical vulnerability that requires immediate attention. Organizations should prioritize patching affected systems, implementing robust security controls, and monitoring for potential exploitation attempts. The European cybersecurity landscape must remain vigilant against such threats to maintain the integrity and security of digital infrastructure.