CVE-2024-28093: Default TELNET service and credentials in AdTran NetVanta 3120 devices expose systems to unauthorized root access. The AdTran NetVanta 3120 device, with firmware version 18.01.01.00.E, ships with the TELNET service enabled by default, along with default login credentials for a root-level account. The SVRS score of 30 suggests a low to medium level of risk; however, exploitation can lead to complete system compromise. This vulnerability allows attackers to gain unrestricted control over the device and potentially the network it supports. Organizations using affected AdTran devices should immediately disable the TELNET service or change the default credentials. Failure to address this issue can result in significant security breaches and data loss. The risk is compounded by the ease with which this vulnerability can be exploited, requiring only basic knowledge of default credentials.