9.8
CVE-2026-42376
- EPSS 0.17%
- Veröffentlicht 04.05.2026 16:03:59
- Zuletzt bearbeitet 11.05.2026 19:39:19
- Quelle 33c584b5-0579-4c06-b2a0-8d8329
- CVE-Watchlists
- Unerledigt
LoginD-Link DIR-456U A1 Hardcoded Telnet Backdoor Credentials
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Dlink ≫ Dir-456u Firmware Version-
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.17% | 0.373 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| 33c584b5-0579-4c06-b2a0-8d8329fcab9c | 9.8 | 3.9 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
CWE-798 Use of Hard-coded Credentials
The product contains hard-coded credentials, such as a password or cryptographic key.