A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper input validation in the vlan_name parameter in the /shut_set.asp endpoint. This vulnerability is classified as high severity with a CVSS score of 7.5, indicating a significant risk to organizations utilizing this device.
Risk to organizations includes potential disruption of service due to the availability impact associated with this flaw. The nature of the vulnerability allows attackers to exploit it remotely, making it particularly concerning for networked environments.
Currently, there are no known public exploits or proof-of-concept code available for this vulnerability, but organizations should not overlook it. Given its high CVSS score and availability impact, organizations should prioritize patching immediately.
The vulnerability was published on April 8, 2026. Organizations using the affected firmware versions should take immediate action to evaluate their exposure and implement necessary updates.
Vulnerability Details
The identified vulnerability is classified under CWE-120, indicating a buffer overflow issue. The CVSS score of 7.5 reflects a high severity level, emphasizing the importance of addressing this vulnerability. It affects the D-Link DI-8003 firmware version 16.07.26A1, which is susceptible to an attack vector over the network. The vulnerability allows for high availability impact, with no privileges required for exploitation.
Technical Analysis
The root cause of this vulnerability lies in improper input validation, which can lead to a buffer overflow when the vlan_name parameter is not correctly handled. Attackers can exploit this vulnerability by sending crafted requests to the /shut_set.asp endpoint without requiring any user interaction or specific privileges.
The attack vector for this vulnerability is network-based, allowing remote attackers to exploit the flaw with low complexity. The impact on availability can result in a denial of service, making this vulnerability critical for organizations relying on the stability of their network devices.
Risk & Impact Analysis
Real-world deployment of this vulnerability poses significant risks as it can disrupt services, leading to potential financial losses and damage to reputation. Organizations should consider the blast radius potential, as the vulnerability could be exploited across their network if the affected device is not properly secured.
Given the high CVSS score, organizations should assess this vulnerability's urgency based on their operational environment. The risk of exploitation is notable, and immediate action is recommended to mitigate potential impacts.
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 16.07.26A1. Organizations using this version should upgrade to the latest firmware to mitigate this vulnerability. If version information is unavailable, organizations should consider all versions prior to vendor patch as potentially affected.
Mitigation & Remediation
D-Link has published a security bulletin regarding this vulnerability, and organizations should refer to it for specific patch or update information. Organizations should prioritize patching and consider implementing network segmentation to limit exposure until patches are applied. For comprehensive security, organizations may also engage in penetration testing to identify additional vulnerabilities within their network.
Detection Guidance
Monitoring logs for unusual patterns related to the /shut_set.asp endpoint can help detect potential exploitation attempts. Additionally, organizations should look for signs of service disruption or unexpected behavior in network devices.
AppSecure Threat Intelligence Insight
This vulnerability highlights the critical need for ongoing security assessments and the importance of timely patching. It reflects a trend where network-based devices continue to be targeted due to their exposure in enterprise environments. Security teams should prioritize the implementation of robust input validation mechanisms to prevent similar vulnerabilities.
For a comprehensive review of vulnerability management practices, organizations can refer to the vulnerability management program and consider engaging in penetration testing methodology reviews to enhance their security posture.
For further insights into security practices, organizations can explore our resources on API penetration testing and cloud penetration testing strategies to ensure a holistic approach to security.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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