CVE-2025-50669 is a buffer overflow vulnerability found in D-Link DI-8003 firmware versions 16.07.26A1 and 19.12.10A1. The vulnerability arises from the improper handling of the wan_ping parameter in the /wan_ping.asp endpoint.
The vulnerability has been assigned a CVSS score of 7.5, classifying it as high severity. This indicates a significant risk to organizations utilizing the affected firmware, as exploitation could lead to denial of service.
Risk to organizations includes potential service disruptions and operational impacts due to the availability impact being rated as high.
Currently, there is no known public exploit for this vulnerability. However, organizations should prioritize patching immediately to mitigate the risk.
The urgency for defenders is critical, given the nature of the vulnerability and the potential consequences of exploitation.
Vulnerability Details
The official CVE description states that a buffer overflow vulnerability exists in D-Link DI-8003 firmware versions 16.07.26A1 and DI-8003G 19.12.10A1 due to improper handling of the wan_ping parameter in the /wan_ping.asp endpoint.
This vulnerability falls under the CWE-120 classification, indicating a buffer copy without checking the size of the buffer.
With a CVSS score of 7.5 (high severity), this vulnerability is characterized by a network attack vector, low attack complexity, no privileges required, and no user interaction needed.
The vulnerability was published on April 8, 2026. Organizations running affected versions should take immediate action to remediate.
Technical Analysis
The root cause of this vulnerability is a buffer overflow, which can occur when the input exceeds the allocated buffer size. Attackers may leverage this vulnerability to crash the device or execute arbitrary code.
The attack vector is network-based, meaning attackers can exploit this remotely without physical access to the device. The attack complexity is low, as no advanced skills are required, and no user interaction is necessary.
Confidentiality and integrity impacts are minimal, but the availability impact is rated as high, indicating that successful exploitation can result in service disruption.
Risk & Impact Analysis
Organizations using D-Link DI-8003 firmware should assess their exposure to this vulnerability. Given the high availability impact, the potential for service disruption poses a significant risk to operations.
The risk is heightened for organizations with critical infrastructure relying on the affected devices. Rapid identification and remediation are crucial to avoid exploitation.
Urgency is further emphasized by the CVSS score, which categorizes this vulnerability as high severity. Organizations should address this vulnerability in their priority patch cycle.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions include D-Link DI-8003 firmware 16.07.26A1 and DI-8003G firmware 19.12.10A1. Organizations should ensure all devices are updated to the latest firmware version.
Mitigation & Remediation
To mitigate the risk of exploitation, organizations should update to the latest firmware version provided by D-Link. Regularly checking for updates is crucial.
If a patch is unavailable, consider implementing network controls to restrict access to the vulnerable endpoint and monitor for any suspicious activity.
Organizations may also benefit from conducting a thorough security assessment to identify and remediate similar vulnerabilities.
Penetration testing can help validate the effectiveness of the implemented security measures.
Detection Guidance
Organizations should monitor logs for indicators of exploitation related to the wan_ping endpoint. Look for unusual patterns or spikes in traffic that may indicate an attempted attack.
Additionally, behavioral anomalies in network traffic could suggest attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-50669 highlights the ongoing challenges in securing IoT devices, particularly in managing firmware vulnerabilities.
This vulnerability represents a pattern of insufficient input validation in embedded systems, a common issue that security teams must address.
Organizations should prioritize a proactive security approach, including regular audits and assessments, to prevent similar vulnerabilities from being introduced.
For further insights, teams can explore our resources on penetration testing methodology and vulnerability management program design to strengthen their security posture.
Finally, organizations should stay informed about emerging threats and trends to effectively defend against vulnerabilities like CVE-2025-50669.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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