CVE-2025-50670
Published: 08 April 2026
Summary
CVE-2025-50670 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 34.6th 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
Mandates validation of user-supplied parameters like name, qq, and time at the /xwgl_bwr.asp endpoint to enforce bounds checking and prevent buffer overflows.
Restricts the length, type, and volume of input parameters to the web endpoint, directly mitigating oversized inputs that trigger the buffer overflow.
Requires timely flaw remediation by applying vendor patches from the D-Link security bulletin to correct the buffer overflow vulnerability in firmware 16.07.26A1.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unauthenticated remote exploitation of buffer overflow in public web endpoint (/xwgl_bwr.asp) directly matches T1190; resulting DoS is impact, not a separate technique.
NVD Description
A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of parameters in the /xwgl_bwr.asp endpoint. An attacker can exploit this vulnerability by sending a crafted HTTP GET request in the name, qq, and time parameters.
Deeper analysisAI
CVE-2025-50670 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 parameters in the /xwgl_bwr.asp web endpoint, which processes user-supplied input without adequate bounds checking.
An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted HTTP GET request that manipulates the "name", "qq", and "time" parameters. Successful exploitation leads to a denial-of-service condition, as indicated by the CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), potentially causing the device to crash or become unresponsive without impacting confidentiality or integrity.
Mitigation guidance is available in vendor advisories; security practitioners should consult the D-Link security bulletin at https://www.dlink.com/en/security-bulletin/ and the IoT vulnerability collection at https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md for details on patches or workarounds. The CVE was published on 2026-04-08.
Details
- CWE(s)