CVE-2025-50667
Published: 08 April 2026
Summary
CVE-2025-50667 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Dlink Di-8003 Firmware. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the buffer overflow by enforcing validation of the improperly handled 'iface' parameter in the /wan_line_detection.asp endpoint.
Requires timely remediation of the identified buffer overflow flaw in D-Link DI-8003 firmware version 16.07.26A1 via patching.
Protects against the denial-of-service impact resulting from remote exploitation of the buffer overflow vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unauthenticated remote buffer overflow on public web endpoint enables T1190 (Exploit Public-Facing Application) and directly produces DoS via crash/reboot (T1499.004 Application or System Exploitation).
NVD Description
A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the iface parameter in the /wan_line_detection.asp endpoint.
Deeper analysisAI
A buffer overflow vulnerability, tracked as CVE-2025-50667 and published on 2026-04-08, affects the D-Link DI-8003 device running firmware version 16.07.26A1. The issue stems from improper handling of the "iface" parameter in the /wan_line_detection.asp endpoint, corresponding to CWE-120. It has a CVSS v3.1 base score of 7.5, rated as high severity due to its network accessibility and potential for disruption.
Remote attackers require no authentication or user interaction to exploit this vulnerability over the network with low complexity. By sending a specially crafted request to the vulnerable endpoint, an attacker can trigger the buffer overflow, resulting in a denial of service condition through application crash or device reboot, as indicated by the high availability impact (A:H) in the CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Mitigation details and advisories are referenced in the D-Link security bulletin at https://www.dlink.com/en/security-bulletin/ and the IoT vulnerability collection on GitHub at https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md.
Details
- CWE(s)