CVE-2025-50659 D‑Link CVE debrief

Who should care

Security teams responsible for D-Link DI-8003 devices, as well as operators and administrators of affected systems, should assess and mitigate this vulnerability to prevent potential attacks. This includes reviewing system configurations, applying patches or updates, and implementing compensating controls.

Technical summary

The vulnerability is caused by improper handling of the custom_error parameter in the /user.asp endpoint of D-Link DI-8003 16.07.26A1. This could allow an attacker to execute arbitrary code on the device. The CVSS score for this vulnerability is 7.5, indicating a high severity. The vulnerability affects D-Link DI-8003 devices and requires immediate attention from security teams. Security teams should assess the potential impact and implement necessary mitigations, including reviewing system configurations, applying patches or updates, and implementing compensating controls. The CVE record and NVD entry provide details on the vulnerability, but additional information from the vendor or other sources may be necessary to fully understand the impact and mitigation strategies.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, as it could allow for remote code execution on affected devices.

Recommended defensive actions

• Inventory and assess D-Link DI-8003 devices for exposure
• Apply vendor patches or updates if available
• Implement compensating controls such as web application firewalls
• Monitor for suspicious activity on affected devices
• Review system configurations and apply necessary changes
• Track exceptions and retest remediated assets

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, additional information from the vendor or other sources may be necessary to fully understand the impact and mitigation strategies. The vulnerability is considered high severity, and affected systems should be prioritized for patching or mitigation.

Official resources