CVE-2025-50659: D-Link Di-8003 Firmware

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the custom_error parameter in the /user.asp endpoint.

Affected products

• D-Link Di-8003 Firmware: version 16.07.26a1 only

Published 2026-04-08. Last modified 2026-07-25.