A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of multiple parameters in the /web_post.asp endpoint. This vulnerability allows attackers to send a crafted HTTP GET request in parameters such as name, en, user_id, log, and time. The severity of this vulnerability is rated high, with a CVSS score of 7.5.
Risk to organizations includes potential denial of service, as the availability impact is rated high. Given the nature of this vulnerability, organizations should prioritize patching immediately.
Currently, there are no known exploits or public proof of concept for this vulnerability. However, the potential for exploitation exists, particularly as it relates to network-based attacks.
Organizations using the affected firmware should address this vulnerability in their priority patch cycle to mitigate risks.
Vulnerability Details
The vulnerability described is classified as a buffer overflow, with a CVSS score of 7.5 indicating high severity. The affected product is the D-Link DI-8003 with firmware version 16.07.26A1, published on April 8, 2026. It is classified under CWE-120.
Technical Analysis
The root cause of this vulnerability lies in improper input validation within the web_post.asp endpoint. Attackers may leverage this vulnerability by sending malformed requests that exceed the buffer limits, leading to potential crashes or unexpected behavior.
The attack vector is network-based, with low complexity required for exploitation, meaning attackers do not need elevated privileges or user interaction.
The availability impact is rated high, as successful exploitation could lead to service interruptions.
Risk & Impact Analysis
Organizations using D-Link DI-8003 devices are at risk of service disruptions due to this vulnerability. The potential blast radius could affect all devices running the vulnerable firmware, leading to significant operational impacts.
Given the high severity and the nature of the vulnerability, organizations should assess their exposure and prioritize remediation efforts accordingly.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version is D-Link DI-8003 firmware version 16.07.26A1. Organizations should note that all versions prior to vendor patch are affected.
Mitigation & Remediation
D-Link has published a security bulletin regarding this vulnerability. Organizations should apply the latest patches as soon as they are available. If a patch cannot be applied, consider implementing configuration hardening and network controls to limit exposure.
For further information on security practices, organizations can refer to the application security assessment services.
Detection Guidance
Organizations should monitor logs for any unusual activity on the /web_post.asp endpoint. Look for unexpected parameter values and HTTP GET requests that may indicate an attempt to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in the growing trend of buffer overflow vulnerabilities in IoT devices. As organizations increasingly rely on such devices, understanding the potential impact of these vulnerabilities is critical.
This highlights the importance for security teams to continuously assess their devices and implement robust continuous penetration testing practices to identify and mitigate vulnerabilities before they can be exploited.
Organizations may also benefit from engaging in red teaming services to gain insights into the effectiveness of their security measures.
Lastly, understanding the implications of this vulnerability can inform better security policies and procedures for IoT devices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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