CVE-2026-42376 | D-Link DIR-456U A1 S80telnetd.sh strcmp hard-coded credentials

A vulnerability classified as critical was found in D-Link DIR-456U A1. This vulnerability affects the function strcmp of the file /etc/init0.d/S80telnetd.sh. The manipulation results in hard-coded credentials. This vulnerability only affects products that are no longer supported by the maintainer.

This vulnerability is known as CVE-2026-42376. Access to the local network is required for this attack. No exploit is available.