CVE-2025-50669
Published: 08 April 2026
Summary
CVE-2025-50669 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
Enforces validation of the wan_ping parameter at the /wan_ping.asp endpoint to prevent buffer overflow from improper input handling.
Requires timely remediation of the known buffer overflow flaw via firmware updates for affected D-Link DI-8003 devices.
Implements memory protections such as ASLR and DEP to mitigate exploitation of the buffer overflow vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unauthenticated remote buffer overflow in public web endpoint (/wan_ping.asp) directly enables T1190 exploitation of public-facing app; resulting crash/DoS matches T1499.004 application exploitation for availability impact.
NVD Description
A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 and DI-8003G 19.12.10A1 due to improper handling of the wan_ping parameter in the /wan_ping.asp endpoint.
Deeper analysisAI
CVE-2025-50669 is a buffer overflow vulnerability (CWE-120) present in D-Link DI-8003 firmware version 16.07.26A1 and DI-8003G firmware version 19.12.10A1. The flaw arises from improper handling of the "wan_ping" parameter in the "/wan_ping.asp" endpoint. It carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating high severity primarily due to its potential for availability impact.
Unauthenticated remote attackers can exploit this vulnerability over the network with low attack complexity and no user interaction required. Exploitation triggers a buffer overflow, resulting in high availability disruption, such as device crashes or denial of service, without affecting confidentiality or integrity.
Mitigation details are referenced in the D-Link security bulletin at https://www.dlink.com/en/security-bulletin/ and an IoT vulnerability collection at https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md.
Details
- CWE(s)