Threats Tagged 'cve-2026-42376'
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Threats Tagged 'cve-2026-42376'
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CVE-2026-42376: CWE-798 Use of Hard-coded Credentials in D-Link DIR-456U FirmwareCVE-2026-42376 0 D-Link DIR-456U Hardware Revision A1 (End-of-Life, EOL) contains a hardcoded telnet backdoor. The device starts a telnet daemon at boot via /etc/init0.d/S80telnetd.sh with the username "Alphanetworks" and the static password "whdrv01_dlob_dir456U" read from /etc/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. Join the discussion | CVE Database V5 | 05/04/2026, 16:03:59 UTC Added: 05/04/2026, 16:36:24 UTC |
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