Overview
The cybersecurity community has recently identified a critical vulnerability, designated as CVE-2025-6372, in the D-Link DIR-619L 2.06B01. This vulnerability involves a stack-based buffer overflow that can be triggered remotely. The severity of this vulnerability stems from its potential to compromise systems or leak data, especially concerning considering that it affects an unsupported product. This means that many users may not have easy access to vendor patches and would therefore be particularly vulnerable.
Vulnerability Summary
CVE ID: CVE-2025-6372
Severity: Critical, CVSS Score: 8.8
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential 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 vulnerability exists within the formSetWizard1 function of the /goform/formSetWizard1 file. Specifically, the issue arises from the manipulation of the curTime argument, which results in a stack-based buffer overflow. An attacker can exploit this vulnerability by sending a specially crafted request that includes an oversized curTime argument. The system’s attempt to process this oversized argument results in the overflow, potentially allowing malicious code to be executed and compromising the system.
Conceptual Example Code
Here’s a conceptual illustration of how an attacker might exploit this vulnerability. This is a hypothetical HTTP request in which a malicious payload is embedded in the curTime argument:
POST /goform/formSetWizard1 HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "curTime": "OVERSIZED_PAYLOAD_HERE" }In this case, “OVERSIZED_PAYLOAD_HERE” would be replaced with the attacker’s malicious payload, which would exploit the buffer overflow vulnerability when processed by the affected system.
Recommended Mitigation
Given that the affected product is no longer supported by the vendor, a patch may not be readily available. As a temporary mitigation, users are advised to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS). These systems can help detect and block malicious requests that attempt to exploit this vulnerability. However, users are strongly advised to apply a vendor patch as soon as it becomes available, as these measures are only temporary and do not address the root cause of the vulnerability.