Overview
The world of cybersecurity has once again been shaken by the discovery of a critical vulnerability, dubbed CVE-2025-44890. This vulnerability exists in the FW-WGS-804HPT v1.305b241111, and it has serious implications for both organizations and individuals using this firmware. The vulnerability stems from a stack overflow situation, which can be triggered via the host_ip parameter in the web_snmp_notifyv3_add_post function. The potential consequences of this vulnerability are severe. As it stands, cybercriminals could compromise systems or leak sensitive data, causing widespread damage and potential financial loss.
Vulnerability Summary
CVE ID: CVE-2025-44890
Severity: Critical (9.8 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
FW-WGS-804HPT | v1.305b241111
How the Exploit Works
The exploit takes advantage of a stack overflow vulnerability in the web_snmp_notifyv3_add_post function of the FW-WGS-804HPT v1.305b241111. This function allows the manipulation of the host_ip parameter, which if overloaded with too much data, causes a stack overflow. This, in turn, can lead to arbitrary code execution or a crash, resulting in a potential system compromise or data leakage.
Conceptual Example Code
Below is a conceptual example of how an attacker might exploit this vulnerability. The attacker sends a maliciously crafted payload to the host_ip parameter, causing a stack overflow scenario.
POST /web_snmp_notifyv3_add_post HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
host_ip=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...The string “A” is repeated excessively to cause a stack overflow. Note that this is a simplified conceptual example and actual exploitation may require more sophisticated techniques.
Mitigation Guidance
The ideal solution to this vulnerability is to apply the vendor patch as soon as it becomes available. However, if the patch is not immediately available, or if systems cannot be updated immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation measure. These tools can help detect and prevent exploitation attempts. As always, users should ensure their systems are regularly updated and follow best practices for cybersecurity to minimize the risk of exploitation.