CVE-2026-90693 [CRITICAL] – A flaw has been found in D-Link DIR-878 120B05. This impacts the function SetWan3Settings

A flaw has been found in D-Link DIR-878 120B05. This impacts the function SetWan3Settings of the component WAN Settings. This manipulation of the argument Primary/Secondary causes stack-based buffer overflow. Remote exploitation of the attack is possible.