Certain D-Link devices have a hardcoded Alphanetworks user account with TELNET access because of /etc/config/image_sign or /etc/alpha_config/image_sign. This affects DIR-600 B1 V2.01 for WW, DIR-890L A1 v1.03, DIR-615 J1 v100 (for DCN), DIR-645 A1 v1.03, DIR-815 A1 v1.01, DIR-823 A1 v1.01, and DIR-842 C1 v3.00.
This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 14 products from dlink, from dlink, from dlink and 11 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-11-11T14:15:10.697
2024-11-21T04:33:42.843
Modified
CVSSv3.1: 9.8 (CRITICAL)
AV:N/AC:L/Au:N/C:C/I:C/A:C
10.0
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | dlink | dir-600_b1_firmware | 2.01 | Yes |
| Hardware | dlink | dir-600_b1 | - | No |
| Operating System | dlink | dir-615_j1_firmware | 100 | Yes |
| Hardware | dlink | dir-615_j1 | - | No |
| Operating System | dlink | dir-645_a1_firmware | 1.03 | Yes |
| Hardware | dlink | dir-645_a1 | - | No |
| Operating System | dlink | dir-815_a1_firmware | 1.01 | Yes |
| Hardware | dlink | dir-815_a1 | - | No |
| Operating System | dlink | dir-823_a1_firmware | 1.01 | Yes |
| Hardware | dlink | dir-823_a1 | - | No |
| Operating System | dlink | dir-842_c1_firmware | 3.00 | Yes |
| Hardware | dlink | dir-842_c1 | - | No |
| Operating System | dlink | dir-890l_a1_firmware | 1.03 | Yes |
| Hardware | dlink | dir-890l_a1 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For dlink's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.