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CVE-2025-44894: Critical Stack Overflow Vulnerability in FW-WGS-804HPT

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Overview

A critical vulnerability has been identified in FW-WGS-804HPT v1.305b241111, which is a popular firewall system used by various organizations to secure their networks. This vulnerability, indexed as CVE-2025-44894, exposes systems to potential compromise or data leakage. Given the severity of this vulnerability and the widespread use of the affected product, it is of utmost importance for users to understand the nature of the threat and to take immediate preventive measures.

Vulnerability Summary

CVE ID: CVE-2025-44894
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

FW-WGS-804HPT | v1.305b241111

How the Exploit Works

The vulnerability lies in the radDftParamKey parameter in the web_radiusSrv_dftParam_post function. It triggers a stack overflow, which could allow an attacker to execute arbitrary code or cause the system to crash. A stack overflow is a type of buffer overflow where the stack, a region of memory used for static and dynamic variables, is filled beyond its capacity. When this happens, the extra data can overwrite adjacent memory locations, leading to erratic program behavior, including memory access errors, incorrect results, program termination, or a breach of system security.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. The following HTTP request sends a payload that contains more data than the radDftParamKey parameter can handle, causing a stack overflow.

POST /web_radiusSrv_dftParam_post HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "radDftParamKey": "A...[long string]..." }

Recommended Mitigation

To mitigate the impact of this vulnerability, users are advised to immediately apply the vendor-supplied patch. In cases where immediate patching is not possible, users should consider implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. These measures can help prevent exploitation of the vulnerability by monitoring and potentially blocking malicious traffic.
Remember, staying vigilant and up-to-date with patches is key in maintaining a strong cybersecurity posture. The inherent risk associated with CVE-2025-44894 underscores the importance of quickly responding to threats as they emerge.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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