CVE-2025-50668
Published: 08 April 2026
Summary
CVE-2025-50668 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 8.1th 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 SC-5 (Denial-of-service Protection) and SI-10 (Information Input Validation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Timely flaw remediation through firmware updates directly patches the buffer overflow vulnerability in the D-Link DI-8003 web endpoint.
Information input validation ensures proper bounds checking and sanitization of the 's' parameter to prevent the buffer overflow condition.
Denial-of-service protection limits the availability impact from remote exploitation causing device crashes or reboots.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in public web endpoint directly enables remote unauthenticated exploitation for endpoint DoS via application/system exploitation.
NVD Description
A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the s parameter in the /web_list_opt.asp endpoint.
Deeper analysisAI
CVE-2025-50668 is a buffer overflow vulnerability (CWE-120) affecting the D-Link DI-8003 device running firmware version 16.07.26A1. The issue stems from improper handling of the "s" parameter in the /web_list_opt.asp web endpoint, which can lead to a buffer overflow condition. The vulnerability has 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 disruption.
An unauthenticated attacker with network access can exploit this vulnerability remotely with low complexity and no user interaction required. By sending a specially crafted request to the vulnerable endpoint, the attacker can trigger the buffer overflow, resulting in a denial-of-service condition such as device crash or reboot, with no impact on 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; security practitioners should consult these for patch availability, firmware updates, or workarounds specific to the DI-8003.
Details
- CWE(s)