CVE-2025-29043: High-Risk Remote Code Execution Vulnerability in Dlink DIR 832x 240802

Overview

In the rapidly evolving world of cybersecurity, it is crucial to stay abreast of the latest vulnerabilities. One such critical vulnerability, CVE-2025-29043, has been identified in the popular networking device, dlink DIR 832x 240802. This vulnerability allows attackers to remotely execute arbitrary code, potentially compromising the integrity, confidentiality, and availability of the targeted system.
This vulnerability is of particular concern due to its high CVSS Severity Score and the potential for data leakage. This issue affects all users of the dlink DIR 832x 240802 and needs to be addressed immediately to prevent potential exploitation.

Vulnerability Summary

CVE ID: CVE-2025-29043
Severity: Critical (9.8/10)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

dlink DIR 832x | 240802

How the Exploit Works

The vulnerability lies in the way the dlink DIR 832x 240802 handles specific function calls. An attacker can exploit this vulnerability by sending a specially crafted payload to the function 0x417234. This would allow them to execute arbitrary code, potentially giving them full control over the system.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. Note this is not a real exploit, but a representation of how an attack might occur.

POST /0x417234/functioncall HTTP/1.1
Host: target.dlinkdevice.com
Content-Type: application/json
{ "malicious_payload": "..." }

In this example, the attacker sends a POST request to the vulnerable function on the target device. The malicious payload in the body of the request is then executed by the system, potentially leading to a full system compromise.

Mitigation

Users of the affected product are strongly advised to apply the vendor patch as soon as possible. However, if immediate patching is not possible, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These solutions can help detect and block malicious traffic targeting the vulnerability. Nonetheless, these are temporary measures and applying the vendor patch remains the most effective way to fully mitigate the risk.