A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the http_lanport parameter in the /webgl.asp endpoint. This vulnerability is classified as high severity with a CVSS score of 7.5, indicating a significant risk that organizations need to address. The potential impacts include denial of service, which can result in system unavailability.
The vulnerability was published on April 8, 2026, and is currently analyzed with no known exploits reported. However, given its nature, organizations should remain vigilant and prioritize remediation efforts to mitigate any risks associated with this vulnerability.
Organizations should prioritize patching immediately. The lack of known exploits does not diminish the need for prompt action to secure the affected devices.
Risk to organizations includes potential downtime and service disruption, emphasizing the importance of addressing this vulnerability in a timely manner.
Vulnerability Details
The vulnerability in question is classified under CWE-120, which refers to buffer copy without checking size of input. This flaw originates from the improper handling of the http_lanport parameter in the /webgl.asp endpoint within the D-Link DI-8003 firmware version 16.07.26A1.
The CVSS score of 7.5 indicates high severity, with the attack vector being network-based, requiring low complexity and no privileges or user interaction. The availability impact is categorized as high, suggesting significant potential disruption.
Organizations using the affected D-Link product should assess their exposure and act quickly to implement necessary patches or updates provided by the vendor.
Technical Analysis
The root cause of this vulnerability stems from inadequate validation of user input, specifically in the context of the http_lanport parameter. Attackers can exploit this oversight by sending crafted requests to the /webgl.asp endpoint, potentially leading to a buffer overflow.
The attack vector is network-based, allowing attackers to exploit the vulnerability remotely without needing physical access to the device. The attack complexity is assessed as low, meaning that successful exploitation does not require advanced skills.
No privileges are required for exploitation, and no user interaction is necessary for the attack to succeed. The confidentiality and integrity impacts are rated as none, but the availability impact is high, indicating that a successful attack could lead to significant downtime.
Risk & Impact Analysis
The real-world risk associated with this vulnerability is considerable, as organizations using the D-Link DI-8003 could face service disruptions that may affect their operational capabilities. The potential for high availability impact necessitates an urgent response.
This vulnerability's characteristics suggest a blast radius that could affect any services relying on the impacted device, underscoring the need for organizations to act decisively.
The urgency assessment based on the CVSS score indicates that organizations should address this vulnerability in their priority patch cycle. Given the absence of known exploits, while the immediate risk may be lower, the potential for exploitation remains a concern.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The specific version affected by this vulnerability is D-Link DI-8003 firmware version 16.07.26A1. Organizations should ensure that this version is not in use or is promptly updated.
Mitigation & Remediation
Organizations using the affected D-Link DI-8003 firmware should implement the latest patches or updates as they become available. They should also consider configuration hardening and network controls to mitigate risk until a patch can be applied. For a comprehensive security assessment, organizations can engage in application security assessment to identify and remediate potential weaknesses.
Detection Guidance
Monitoring for unusual traffic patterns to the /webgl.asp endpoint can provide early indications of attempts to exploit this vulnerability. Organizations should log and review access to this endpoint and look for any abnormal behavior that could indicate an attack.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its demonstration of the risks associated with inadequate input validation in networked devices. As devices become increasingly interconnected, the potential for exploitation through such vulnerabilities rises.
Organizations must prioritize security assessments and engage in proactive measures to manage vulnerability exposure. For further insights and strategies, organizations can explore vulnerability management program design and consider adopting a continuous approach to security through continuous penetration testing to stay ahead of potential threats.
Additionally, organizations may benefit from engaging in red teaming exercises to identify potential weaknesses before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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