D-Link DIR-300 REVA FIRMWARE v1.06B05_WW contains hardcoded credentials in the Telnet service.
https://github.com/LYaoBoL/IOT_CVE
https://github.com/LYaoBoL/IOTsec/blob/main/D-Link/DIR300/D-Link300.md
https://github.com/LYaoBoL/IOTsec/blob/main/D-Link/DIR300/CVE-2024-41616