D-Link DIR-605L / DIR-600L / DIR-456U EOL Routers
D-Linknetwork9 credentials5 default credentials
Web Administration Password
d-link-eol-routers / web-admin-password
D-Link DIR-series routers expose a browser-based administration interface for configuring Internet, wireless, firewall, and management settings. The administrator credential protects the router web UI and management flows; it is deployment-specific and should be changed from any initial setup value. Treat credentials recovered from configuration backups or device storage as sensitive administrative credentials.
Location
http://192.168.0.1/Local router web administration interface commonly used by D-Link DIR routers
http://dlinkrouter.local/Local setup and management hostname used by supported D-Link router firmware
Router configuration exports, nvram/config partitions, and web-management account settings
Password managers, deployment records, ISP/customer handoff notes, and asset-management vaults
Firmware images or extracted filesystem/config partitions containing account defaults or hashes
Setup logs, browser autofill stores, helpdesk notes, and support bundles may expose admin credentials
Notes
Do not infer a universal D-Link admin default from examples or old manuals. Model, hardware revision, firmware build, region, ISP customization, and prior setup can change the effective web-admin credential.
WAN / ISP Access Credentials
d-link-eol-routers / wan-isp-credentials
D-Link router configurations can contain credentials used for WAN access, including PPPoE/PPTP/L2TP usernames and passwords supplied by an ISP or administrator. Exposure of these values can allow account misuse or unauthorized network access depending on provider controls.
Location
Internet / WAN setup pageRouter web UI pages for PPPoE, PPTP, L2TP, or ISP-specific WAN authentication
Router configuration backup files and WAN configuration stored in nvram/config partitions
ISP customer records, installation notes, password managers, and network asset vaults
PPP/authentication troubleshooting logs, support bundles, screenshots, and helpdesk notes
Notes
These are customer/ISP-defined credentials, not static product defaults. They are included because router backup files and management interfaces are common places to encounter operational credentials during assessment.
Remote Management / Cloud Service Secret
d-link-eol-routers / remote-management-service-secret
Some D-Link DIR firmware families support remote-management or cloud management features. Associated tokens, account passwords, device pairing secrets, or service credentials may be present in configuration exports, firmware filesystems, application state, or support records when those features are enabled.
Location
Remote management / cloud management setup pagesRouter web UI or companion-app flows for enabling remote administration
Router configuration backups, nvram/config partitions, and cloud-management settings
Password managers, D-Link/cloud account records, mobile OS credential stores, and MDM backups
Firmware images and extracted filesystems containing service endpoints or fallback secrets
Pairing logs, mobile app diagnostics, support bundles, and cloud troubleshooting records
Notes
Include concrete token formats or literal defaults only when a vendor doc, firmware finding, CVE, or advisory identifies them for a specific model and build.
DIR-605L A1 Hardcoded Telnet Backdoor
d-link-eol-routers / dir-605l-a1-telnet-backdoor
D-Link DIR-605L hardware revision A1 starts a telnet daemon at boot via /bin/telnetd.sh using a hardcoded username and password read from /etc/alpha_config/image_sign. Successful authentication grants a root shell with full administrative control on the EOL device.
Default credentials
Alphanetworks:wrgn35_dlwbr_dir605lLocation
/etc/alpha_config/image_signFirmware file containing the static password used by telnetd startup
/bin/telnetd.shBoot/startup script that launches telnetd with the hardcoded credential
telnetTelnet login grants root shell after successful authentication
EOL DIR-605L A1 firmware image containing the backdoor files
Notes
Tracked as CVE-2026-42372. The device is End-of-Life and is not expected to receive patches.
DIR-605L B2 Hardcoded Telnet Backdoor
d-link-eol-routers / dir-605l-b2-telnet-backdoor
D-Link DIR-605L hardware revision B2 starts a telnet daemon at boot via /bin/telnetd.sh using a hardcoded username and password read from /etc/alpha_config/image_sign. Successful authentication grants a root shell with full administrative control on the EOL device.
Default credentials
Alphanetworks:wrgn76_dlwbr_dir605LLocation
/etc/alpha_config/image_signFirmware file containing the static password used by telnetd startup
/bin/telnetd.shBoot/startup script that launches telnetd with the hardcoded credential
telnetTelnet login grants root shell after successful authentication
EOL DIR-605L B2 firmware image containing the backdoor files
Notes
Tracked as CVE-2026-42373. The device is End-of-Life and is not expected to receive patches.
DIR-600L B1 Hardcoded Telnet Backdoor
d-link-eol-routers / dir-600l-b1-telnet-backdoor
D-Link DIR-600L hardware revision B1 starts a telnet daemon at boot via /bin/telnetd.sh using a hardcoded username and password read from /etc/alpha_config/image_sign. Successful authentication grants a root shell with full administrative control on the EOL device.
Default credentials
Alphanetworks:wrgn61_dlwbr_dir600LLocation
/etc/alpha_config/image_signFirmware file containing the static password used by telnetd startup
/bin/telnetd.shBoot/startup script that launches telnetd with the hardcoded credential
telnetTelnet login grants root shell after successful authentication
EOL DIR-600L B1 firmware image containing the backdoor files
Notes
Tracked as CVE-2026-42374. The device is End-of-Life and is not expected to receive patches.
DIR-600L A1 Hardcoded Telnet Backdoor
d-link-eol-routers / dir-600l-a1-telnet-backdoor
D-Link DIR-600L hardware revision A1 starts a telnet daemon at boot via /bin/telnetd.sh using a hardcoded username and password read from /etc/alpha_config/image_sign. Successful authentication grants a root shell with full administrative control on the EOL device.
Default credentials
Alphanetworks:wrgn35_dlwbr_dir600lLocation
/etc/alpha_config/image_signFirmware file containing the static password used by telnetd startup
/bin/telnetd.shBoot/startup script that launches telnetd with the hardcoded credential
telnetTelnet login grants root shell after successful authentication
EOL DIR-600L A1 firmware image containing the backdoor files
Notes
Tracked as CVE-2026-42375. The device is End-of-Life and is not expected to receive patches.
DIR-456U A1 Hardcoded Telnet Backdoor
d-link-eol-routers / dir-456u-a1-telnet-backdoor
D-Link DIR-456U hardware revision A1 starts a telnet daemon at boot via /etc/init0.d/S80telnetd.sh using a hardcoded username and password read from /etc/config/image_sign. Successful authentication grants a root shell with full administrative control on the EOL device.
Default credentials
Alphanetworks:whdrv01_dlob_dir456ULocation
/etc/config/image_signFirmware file containing the static password used by telnetd startup
/etc/init0.d/S80telnetd.shBoot/startup script that launches telnetd with the hardcoded credential
telnetTelnet login grants root shell after successful authentication
EOL DIR-456U A1 firmware image containing the backdoor files
Notes
Tracked as CVE-2026-42376. The device is End-of-Life and is not expected to receive patches.
Scope
Authorized use
LOLCreds helps map the credential surface of real products: known defaults, generated values, credential locations, and exposure patterns.