EUVD-2026-27025CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionNVD
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 "wrgn61_dlwbr_dir600L" read from /etc/alpha_config/image_sign. The custom telnetd binary accepts a -u user:password flag, and the custom login binary uses strcmp() to validate credentials. Successful authentication grants an unauthenticated attacker on the local network a root shell with full administrative control. The device has reached End-of-Life (EOL) and will not receive patches.
AnalysisAI
D-Link DIR-600L Hardware Revision B1 routers expose a hardcoded telnet backdoor granting unauthenticated remote attackers root shell access via static credentials ('Alphanetworks' / 'wrgn61_dlwbr_dir600L'). The vulnerability affects End-of-Life devices that will never receive patches, making permanent network isolation or replacement the only remediation options. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 24 hours: Conduct network inventory scan to identify all D-Link DIR-600L hardware revision B1 devices using SNMP enumeration, SSH/Telnet banner grabbing, or DHCP/DNS lease analysis; isolate any identified units to a quarantined network segment. Within 7 days: Replace all identified DIR-600L B1 devices with current-generation routers from supported vendors; document decommissioned units and destruction/secure erasure procedures. …
Sign in for detailed remediation steps.
More from same product – last 7 days
Share
External POC / Exploit Code
Leaving vuln.today