Hard‑coded AES‑256 Key Enables Remote Decryption, Modification, and Privilege Escalation in FreedomFi Sercomm SCE4255W

Use of a hard-coded AES-256-CBC key in the configuration backup/restore implementation of Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware before DG3934v3@2308041842 allows remote authenticated users to decrypt, modify, and re-encrypt device configurations, enabling credential manipulation and privilege escalation via the GUI import/export functions.

OS command injection in the CWMP client (/ftl/bin/cwmp) of Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware before DG3934v3@2308041842 allows remote attackers controlling the ACS endpoint to execute arbitrary commands as root via a crafted TR-069 Download URL that is passed unescaped into the firmware upgrade pipeline.

Deterministic Credential Generation Exposes Administrative Credentials in Sercomm SCE4255W Small Cell

Use of a deterministic credential generation algorithm in /ftl/bin/calc_f2 in Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware before DG3934v3@2308041842 allows remote attackers to derive valid administrative/root credentials from the device's MAC address, enabling authentication bypass and full device access.

Path Traversal in Sercomm SCE4255W Setup CGI Enables File Disclosure

A path traversal vulnerability in /ftl/web/setup.cgi in Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware before DG3934v3@2308041842 allows remote authenticated users to read arbitrary files from the filesystem via crafted values in the log_type parameter to /logsave.htm.