A buffer overflow vulnerability exists in D-Link DI-8003 firmware version 16.07.26A1 due to improper handling of the iface parameter in the /wan_line_detection.asp endpoint. This vulnerability has been assigned a CVSS score of 7.5, categorizing it as high severity. Organizations utilizing this firmware should be aware of the potential risks associated with exploitation.
Risk to organizations includes potential service disruption due to availability impacts, as the vulnerability can lead to a denial-of-service condition. Attackers may leverage this vulnerability to disrupt services, making it imperative for organizations to act swiftly.
Currently, there are no known exploits available for this vulnerability, and it has not been confirmed as actively exploited in the wild. However, organizations are urged to prioritize patching to avoid future exploitation, especially given the vulnerability's high CVSS score.
Organizations should prioritize patching immediately. Regular assessments and monitoring should be conducted to ensure that systems remain secure and that vulnerabilities are addressed promptly.
Vulnerability Details
The vulnerability arises from improper handling of input parameters, specifically in the /wan_line_detection.asp endpoint of the D-Link DI-8003 firmware 16.07.26A1. This buffer overflow can lead to high availability impact, allowing attackers to disrupt normal operations.
The official CVE description highlights the buffer overflow vulnerability as a significant concern for organizations utilizing the affected firmware. The CVSS version 3.1 score of 7.5 categorizes it as high severity due to its potential for exploitation.
The affected product is the D-Link DI-8003 firmware, and the vulnerability was published on April 8, 2026. It is classified under CWE-120, indicating a buffer copy without checking the size of the input.
Technical Analysis
The root cause of this vulnerability is the inadequate validation of the iface parameter, leading to a buffer overflow condition. The attack vector is network-based, with low complexity, as no privileges or user interaction are required to exploit the vulnerability.
Once exploited, the attacker can achieve high availability impact, as the overflow may lead to system crashes or service interruptions. There is no confidentiality or integrity impact associated with this vulnerability, which limits the scope of potential damage.
Risk & Impact Analysis
The real-world deployment risk for this vulnerability is significant due to the potential for service disruption. Organizations using the D-Link DI-8003 firmware should assess the impact of this vulnerability on their operations, especially in environments where uptime is critical.
Given the CVSS score of 7.5, organizations should address this vulnerability in their priority patch cycle. Regular vulnerability assessments should be conducted to identify and remediate similar weaknesses proactively.
The blast radius potential of this vulnerability could extend to any services relying on the D-Link DI-8003 firmware, thus increasing the urgency for remediation. Organizations should consider implementing additional monitoring controls to detect unusual activity that could indicate attempts to exploit this vulnerability.
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 should note that all versions prior to vendor patch are potentially vulnerable.
Mitigation & Remediation
Organizations should apply the latest firmware updates provided by D-Link to remediate this vulnerability. If a patch is unavailable, consider implementing network segmentation to limit exposure to affected devices.
Configuration hardening should be performed to minimize attack surfaces. Regular monitoring and security assessments should also be scheduled to identify and address any potential vulnerabilities.
For further assistance, organizations may consider engaging in penetration testing to validate their configurations and security posture.
Detection Guidance
Organizations should monitor logs for indicators of unusual activity related to the D-Link DI-8003 firmware. Behavioral anomalies that deviate from normal operation patterns may suggest attempts to exploit this vulnerability.
Network signatures should be developed to detect any malicious attempts targeting the /wan_line_detection.asp endpoint. Additionally, system changes should be reviewed regularly to ensure no unauthorized modifications have occurred.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of input validation in network devices. As more organizations rely on connected devices, the risk of exploitation through vulnerabilities such as this will persist.
Security teams should learn from this incident to enhance their application security practices, ensuring that proper validation mechanisms are in place. Regular security assessments are key to identifying and mitigating similar vulnerabilities.
For more insights on vulnerability management, organizations can refer to our resources on vulnerability management programs and effective security testing methodologies.
Additionally, organizations should stay informed about evolving threats by reviewing our blog on penetration testing methodologies to strengthen their defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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