CVE-2025-9938: D-Link Di-8400 Firmware

High severity, CVSS 8.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A weakness has been identified in D-Link DI-8400 16.07.26A1. The affected element is the function yyxz_dlink_asp of the file /yyxz.asp. This manipulation of the argument ID causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited.

Affected products

• D-Link Di-8400 Firmware: version 16.07.26a1 only

Published 2025-09-04. Last modified 2026-06-17.