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CVE-2025-55602: Buffer Overflow Vulnerability in D-Link DIR-619L 2.06B01

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Overview

The CVE-2025-55602 vulnerability is a critical flaw found in D-Link DIR-619L 2.06B01. This vulnerability arises due to a Buffer Overflow in the formSysCmd function via the submit-url parameter. This flaw, if exploited by an attacker, could lead to system compromise or data leakage. The vulnerability is of significant concern to all users of D-Link DIR-619L 2.06B01 and needs immediate attention.

Vulnerability Summary

CVE ID: CVE-2025-55602
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

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Product | Affected Versions

D-Link DIR-619L | 2.06B01

How the Exploit Works

The flaw resides in the formSysCmd function within the D-Link DIR-619L 2.06B01. An attacker can exploit this vulnerability by injecting a malicious payload into the submit-url parameter. This parameter does not validate or sanitize input properly, leading to a buffer overflow condition. This overflow can enable the attacker to execute arbitrary code or crash the system, potentially compromising the system or leading to data leakage.

Conceptual Example Code

Below is a conceptual example of how this vulnerability might be exploited:

POST /submit-url HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
cmd=<malicious_payload>

In the above example, `` represents the arbitrary code an attacker might use to trigger the buffer overflow vulnerability.

Mitigation

Users are advised to apply the vendor patch as soon as it is available. In the meantime, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation to detect and prevent exploitation of this vulnerability. Regular updating and patching of systems is crucial for maintaining security.

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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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