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        "cveId": "CVE-2026-42374",
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        "state": "PUBLISHED",
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        "dateReserved": "2026-04-27T06:21:56.902Z",
        "datePublished": "2026-05-04T16:00:15.244Z",
        "dateUpdated": "2026-05-05T12:43:29.118Z"
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            "title": "D-Link DIR-600L B1 Hardcoded Telnet Backdoor Credentials",
            "datePublic": "2026-04-24T00:00:00.000Z",
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                            "cweId": "CWE-798",
                            "description": "CWE-798 Use of Hard-coded Credentials",
                            "type": "CWE"
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            "affected": [
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                    "vendor": "D-Link",
                    "product": "DIR-600L Firmware",
                    "platforms": [
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                            "status": "affected",
                            "version": "B1",
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                    "value": "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.",
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.8,
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                    "value": "This product is End-of-Life (EOL) and will NOT receive patches. Users should replace the device. Temporary: connect via backdoor and run \"killall telnetd\" and \"iptables -A INPUT -p tcp --dport 23 -j DROP\" (lost on reboot).",
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