Overview
In today’s interconnected digital world, cybersecurity vulnerabilities pose serious threats to enterprises and individuals alike. One such vulnerability, CVE-2025-7790, has recently been identified in the D-Link DI-8100 16.07.26A1. This vulnerability is particularly critical as it allows for remote exploitation, potentially putting sensitive data and system integrity at risk. It is therefore crucial for users of the affected version to understand the implications and take immediate steps to mitigate this threat.
Vulnerability Summary
CVE ID: CVE-2025-7790
Severity: Critical (CVSS: 8.8)
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
D-Link DI-8100 | 16.07.26A1
How the Exploit Works
The vulnerability resides in an unknown part of the file /menu_nat.asp of the HTTP Request Handler component. The manipulation of the argument out_addr/in_addr/out_port/proto leads to stack-based buffer overflow. This overflow can be exploited by a remote attacker to potentially inject malicious code into the system. The exploit has been disclosed to the public and may be used.
Conceptual Example Code
Considering the information available, an attacker might exploit the vulnerability with a specially crafted HTTP request, similar to the conceptual example below:
POST /menu_nat.asp HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
out_addr=ATTACKER_CONTROLLED_DATA&in_addr=ATTACKER_CONTROLLED_DATA&out_port=ATTACKER_CONTROLLED_DATA&proto=ATTACKER_CONTROLLED_DATAIn this case, the `ATTACKER_CONTROLLED_DATA` fields would be populated with data designed to overflow the buffer, potentially allowing the attacker to execute arbitrary code.
Remediation
The best course of action to mitigate this vulnerability is to apply the vendor-supplied patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. It is also advisable to follow best practices for secure coding to prevent such vulnerabilities in the first place.