CVE-2026-42374

D-Link DIR-600L Hardware Revision B1 End-of-Life contains a hardcoded telnet backdoor. The device starts a telnet daemon at boot via /bin/telnetd.sh with the username "Alphanetworks" and the static password "wrgn61dlwbrdir600L" read from /etc/alphaconfig/imagesign. The custom telnetd binary accep...

CVE-2026-42374

The CVE affects D-Link DIR-600L Hardware Revision B1 (EOL). A hardcoded telnet backdoor starts a telnet daemon at boot and uses the username "Alphanetworks" with a static password read from /etc/alpha_config/image_sign (wrgn61_dlwbr_dir600L). The custom telnetd accepts -u user:password, and the l...