Title: Beetel Beetel 777VR1 Broadband Router Firmware Version: V01.00.09 / V01.00.09_55 CWE-521 — Weak Password Requirements Description: Use of Hard-Coded Default Credentials on UART Diagnostic Interface Affected Product: - Product: Beetel 777VR1 Broadband Router - Firmware Version: V01.00.09 / V01.00.09_55 - Distribution: ISP-provisioned firmware Vulnerability Type: Authentication Bypass via Default Credentials CWE: CWE-521 — Weak Password Requirements Severity: High Attack Vector: Physical (UART) Description: - The Beetel 777VR1 router exposes a UART-based diagnostic interface protected by authentication. The interface accepts well-known, vendor-supplied default credentials (admin / password) and does not enforce a mandatory password change on first use. The default credentials remain valid in production firmware and provide access to a privileged diagnostic environment.