A vulnerability has been found in Beetel 777VR1 up to 01.00.09. The impacted element is an unknown function of the component Web Management Interface. The manipulation leads to hard-coded credentials. The attack needs to be initiated within the local network. The exploit has been disclosed to the public and may be used. It is advisable to modify the configuration settings. The vendor was contacted early about this disclosure but did not respond in any way.
Beetel 777VR1 routers are vulnerable to a critical security flaw allowing for unauthorized access via hard-coded credentials within the Web Management Interface. This vulnerability, publicly disclosed and unpatched, enables attackers on the local network to completely compromise the device, potentially leading to network breaches and data exfiltration.
Step 1: Network Reconnaissance: The attacker identifies a Beetel 777VR1 router on the local network, likely through network scanning tools (e.g., Nmap). Step 2: Web Interface Access: The attacker attempts to access the router's Web Management Interface, typically via HTTP or HTTPS on port 80 or 443. Step 3: Credential Exploitation: The attacker uses the hard-coded credentials to bypass the authentication process. Step 4: Configuration Manipulation: Upon successful authentication, the attacker gains access to the router's configuration settings. Step 5: System Compromise: The attacker can modify the router's settings, potentially changing DNS servers, enabling remote access, or injecting malicious code. Step 6: Network Pivoting: The attacker uses the compromised router as a foothold to access other devices on the network.
The root cause of CVE-2026-2616 lies in the insecure implementation of the Web Management Interface within the Beetel 777VR1 router firmware. Specifically, an unknown function within the interface uses hard-coded credentials for authentication. This bypasses any legitimate authentication mechanisms, granting attackers direct access to the router's configuration and control. The lack of response from the vendor indicates a high likelihood that the vulnerability will remain unpatched, increasing the risk of exploitation. The specific function and the exact credentials are not provided in the CVE description, requiring further reverse engineering of the firmware to fully understand the vulnerability.