A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the name parameter in the /usb_paswd.asp endpoint. This vulnerability is classified as high severity with a CVSS score of 7.5, indicating significant risk to affected systems. The vulnerability allows attackers to exploit the affected system, leading to potential service disruptions.
Risk to organizations includes major availability impact, which can lead to service outages and operational disruptions. The vulnerability is particularly concerning as it requires no privileges or user interaction to exploit, making it accessible to a wide range of attackers. Organizations should prioritize patching immediately.
As of now, there is no known exploit or public proof of concept available for this vulnerability. However, the potential for exploitation remains high, and organizations using this D-Link device should take proactive measures to ensure they are not vulnerable.
Given the severity and potential impact of this vulnerability, organizations should address this issue in their priority patch cycle. Regular monitoring and assessments should be conducted to identify and remediate similar vulnerabilities.
Vulnerability Details
The vulnerability, identified as CVE-2025-50663, is associated with a buffer overflow in the D-Link DI-8003 firmware version 16.07.26A1. The CVSS score of 7.5 reflects a high severity level, primarily due to the potential availability impact. The vulnerability could allow attackers to disrupt services without requiring any prior authentication or user interaction.
The official CVE description states: "A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the name parameter in the /usb_paswd.asp endpoint." This vulnerability falls under the CWE-121 classification, which pertains to stack-based buffer overflow issues.
Published on April 8, 2026, the vulnerability has since been modified. Organizations using the affected product should be aware of the potential impacts and take necessary action.
Technical Analysis
The root cause of this vulnerability is improper handling of input parameters, specifically the name parameter in the /usb_paswd.asp endpoint. Attackers may leverage this vulnerability by sending specially crafted requests to the affected device, resulting in a buffer overflow. The attack vector is categorized as network-based, with low complexity, meaning that potential exploitation does not require advanced skills.
Since the exploitation does not require any privileges or user interaction, this vulnerability poses a significant risk. The impacts on confidentiality and integrity are minimal; however, the availability impact is rated as high, indicating that an attacker could cause service disruption effectively.
Risk & Impact Analysis
Organizations using the D-Link DI-8003 should be aware that the risk of exploitation is substantial due to the nature of the vulnerability. The attack vector being network-based allows attackers to target devices remotely, which significantly broadens the potential attack surface. The availability impact could lead to complete service outages, affecting not only the affected organizations but potentially their customers as well.
The urgency of addressing this vulnerability is underscored by its high CVSS score. Organizations should prioritize remediation actions to patch the affected firmware and mitigate risks. Regular vulnerability assessments and monitoring are also recommended to identify and address similar vulnerabilities proactively.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version includes D-Link DI-8003 firmware version 16.07.26A1. Organizations should ensure that they are running the latest firmware version to avoid being vulnerable to this issue. If specific version information is not available, it is advisable to consider all versions prior to the vendor patch as vulnerable.
Mitigation & Remediation
To mitigate this vulnerability, organizations should prioritize applying the latest firmware update provided by D-Link. It is critical to regularly check for updates and apply them as soon as they are available. For those unable to patch immediately, implementing network controls to restrict access to the affected endpoint can help reduce exposure.
Additionally, organizations can benefit from engaging in penetration testing to assess their security posture and identify other potential vulnerabilities.
Detection Guidance
Organizations should monitor logs for any unauthorized access attempts or unusual activity related to the /usb_paswd.asp endpoint. Behavioral anomalies may indicate attempts to exploit this vulnerability. Additionally, network signatures should be established to detect and alert on malicious traffic targeting the affected D-Link devices.
AppSecure Threat Intelligence Insight
This vulnerability highlights significant security risks inherent in many network devices. As organizations increasingly rely on IoT and network-connected devices, the importance of rigorous security practices cannot be overstated. Regular vulnerability assessments and adherence to security best practices are essential in maintaining a robust security posture.
Security teams should focus on implementing comprehensive security measures to protect against vulnerabilities like CVE-2025-50663. Engaging in proactive security testing and making use of available resources can significantly reduce the risk of exploitation.
For further insights into improving security measures, organizations can refer to the following resources: vulnerability management program design, penetration testing methodology, and security testing best practices to enhance their defense mechanisms.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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