On D-Link DIR-550A and DIR-604M devices through v2.10KR, a malicious user can use a default TELNET account to get unauthorized access to vulnerable devices, aka a backdoor access vulnerability.
The product initializes or sets a resource with a default that is intended to be changed by the product’s installer, administrator, or maintainer, but the default is not secure.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dir-550a_firmware | D-link | * | 2.10kr (including) |