A buffer overflow vulnerability exists in D-Link DI-8003 firmware version 16.07.26A1 due to improper handling of the s parameter in the /web_list_opt.asp endpoint. This vulnerability, classified as high severity with a CVSS score of 7.5, poses a significant risk to organizations that utilize this device. The nature of the flaw allows an attacker to exploit the vulnerability remotely, potentially causing disruption to the device's availability. Organizations should prioritize patching immediately to mitigate this risk.
This vulnerability allows attackers to disrupt service and impact the availability of the D-Link DI-8003 device. Organizations using this device should be aware of the potential consequences of exploitation and the urgency required in addressing this issue. Currently, there are no confirmed public exploits available for this vulnerability, but its high severity level necessitates immediate attention.
The exploitation status shows that this vulnerability is not listed in the Known Exploited Vulnerabilities (KEV) catalog, indicating that it has not yet been actively leveraged in the wild. However, given the nature of the vulnerability and the level of access it could provide, organizations should not delay in implementing necessary patches or mitigations.
Organizations should monitor for any updates from D-Link regarding this vulnerability and ensure that their devices are running the latest firmware version. By taking proactive measures, organizations can help secure their networks against potential threats arising from this vulnerability.
Vulnerability Details
The D-Link DI-8003 firmware version 16.07.26A1 is affected by a buffer overflow vulnerability. The CVSS score of 7.5 falls within the high severity range, indicating a significant risk for exploitation. The vulnerability is classified under CWE-120, which pertains to buffer copy without checking the size of the input. This oversight can lead to an attacker causing the device to crash or become unresponsive.
The vulnerability was published on April 8, 2026, and is categorized as having a NETWORK attack vector, with low complexity and no required privileges or user interaction. This allows the vulnerability to be exploited relatively easily.
Technical Analysis
The root cause of this vulnerability stems from inadequate validation and handling of input parameters within the firmware's web interface. Specifically, the s parameter in the /web_list_opt.asp endpoint does not adequately check the size of the incoming data, which can lead to a buffer overflow condition.
The attack vector is network-based, meaning attackers can exploit it remotely without physical access to the device. The attack complexity is low, requiring no special conditions or privileges. Importantly, the exploit does not require user interaction, making it more dangerous in a real-world scenario.
In terms of impact, the vulnerability has a high availability impact, meaning that successful exploitation could lead to the device becoming unresponsive or crashing. However, the confidentiality and integrity impacts are noted as none, indicating that the attacker does not gain access to sensitive information or alter the device's data.
Risk & Impact Analysis
The risk to organizations includes potential service disruptions and loss of availability for the D-Link DI-8003 device. This could have cascading effects on dependent services or applications, leading to broader operational challenges. Given the high CVSS score, organizations should assess their exposure and consider the potential business impact of a successful exploitation.
Organizations should also consider the blast radius of this vulnerability. Since it allows potential attacks over the network, any organization utilizing the D-Link DI-8003 could be at risk, especially in environments where this device handles critical operations or data.
The urgency of addressing this vulnerability is high, given the potential for exploitation and the significant availability impact. Organizations should prioritize remediation efforts and ensure that they are prepared to implement necessary patches as soon as they are released.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version is the D-Link DI-8003 firmware version 16.07.26A1. Organizations running this version should take immediate action to patch their devices. If version information is unavailable, it is prudent to assume that all versions prior to the vendor patch are vulnerable.
Mitigation & Remediation
D-Link has provided a security bulletin regarding this vulnerability. Organizations should monitor the D-Link security bulletin for updates and apply patches as soon as they are available. For those unable to apply patches immediately, consider implementing network controls to limit access to the affected devices and mitigate potential exploitation. Additionally, organizations should evaluate their configuration to ensure it adheres to security best practices.
For further guidance on penetration testing and security assessments, organizations can refer to the penetration testing services offered by AppSecure.
Detection Guidance
Organizations should monitor logs for any unusual activity that may indicate attempts to exploit this vulnerability. Look for patterns of requests targeting the /web_list_opt.asp endpoint with unusual parameters. Behavioral anomalies in device performance may also serve as indicators of a successful exploit.
Network signatures should be implemented to identify potential exploit attempts, and system changes should be logged and reviewed regularly to detect unauthorized modifications.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential for exploitation in network environments, where devices like the D-Link DI-8003 are critical. This incident highlights the importance of thorough input validation in firmware development and the necessity for regular updates and patches.
Security teams should take this opportunity to review their vulnerability management programs and ensure they are equipped to respond to similar issues proactively. This includes maintaining an inventory of devices and their respective firmware versions, as well as establishing a patch management process.
For best practices in vulnerability management, organizations can explore resources on the vulnerability management program and the importance of penetration testing. Additionally, organizations can learn about the latest trends in ransomware and how to protect against evolving threats by reviewing the findings in the ransomware targeting trends.
Known Exploitation Timeline
This vulnerability has not been added to the KEV catalog, indicating no known exploitation has been identified to date. Organizations are encouraged to remain vigilant and monitor for any updates.
Affected Versions
The affected version is the D-Link DI-8003 firmware version 16.07.26A1. Organizations running this version should take immediate action to patch their devices. If version information is unavailable, it is prudent to assume that all versions prior to the vendor patch are vulnerable.
Mitigation & Remediation
D-Link has provided a security bulletin regarding this vulnerability. Organizations should monitor the D-Link security bulletin for updates and apply patches as soon as they are available. For those unable to apply patches immediately, consider implementing network controls to limit access to the affected devices and mitigate potential exploitation. Additionally, organizations should evaluate their configuration to ensure it adheres to security best practices.
For further guidance on penetration testing and security assessments, organizations can refer to the penetration testing services offered by AppSecure.
Detection Guidance
Organizations should monitor logs for any unusual activity that may indicate attempts to exploit this vulnerability. Look for patterns of requests targeting the /web_list_opt.asp endpoint with unusual parameters. Behavioral anomalies in device performance may also serve as indicators of a successful exploit.
Network signatures should be implemented to identify potential exploit attempts, and system changes should be logged and reviewed regularly to detect unauthorized modifications.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential for exploitation in network environments, where devices like the D-Link DI-8003 are critical. This incident highlights the importance of thorough input validation in firmware development and the necessity for regular updates and patches.
Security teams should take this opportunity to review their vulnerability management programs and ensure they are equipped to respond to similar issues proactively. This includes maintaining an inventory of devices and their respective firmware versions, as well as establishing a patch management process.
For best practices in vulnerability management, organizations can explore resources on the vulnerability management program and the importance of penetration testing. Additionally, organizations can learn about the latest trends in ransomware and how to protect against evolving threats by reviewing the findings in the ransomware targeting trends.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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