Security researcher Pierre Kim documented in 2021 that the ZTE F680’s firmware contains hardcoded RSA private keys for SSH, allowing anyone with the key to decrypt LAN traffic or impersonate the device.
The ZTE F680 has several documented vulnerabilities that security researchers or administrators can test for to harden their networks. If you're looking for a "feature" to include in a security audit tool, focusing on (related to CVE-2020-6868 ) is highly effective as it exploits a known logic flaw in the device's web management interface. Suggested Audit Feature: Automated Config Verification
An attacker can inject malicious HTML or script code by modifying the gateway name. This script triggers when a user views the device's topology page, potentially leading to information theft or unauthorized browser actions. This vulnerability was found in firmware version 6.0.10p3n20 .
: Unless strictly necessary, disable WAN-side (remote) access to the web management interface to prevent external exploitation. zte f680 exploit
The attacker tries the hardcoded credentials: telnet 192.168.1.1 Login: root Password: Zte521
The device parses the malicious packet incorrectly, resulting in a system crash (DoS) or executing the arbitrary code provided by the attacker. Risks of a Compromised ZTE F680
Restrict access to the router's login interface to specific local IP addresses or MAC addresses. For Internet Service Providers (ISPs) Security researcher Pierre Kim documented in 2021 that
Because the router fails to check if the user has an active login session, the CGI script executes the command, enabling the Telnet daemon with hardcoded or default credentials.
When the router executes the ping command, it simultaneously executes the appended commands with administrative privileges. D. TR-069 Misconfigurations
The , a high-performance Dual-Band Concurrent 11ac advanced GPON gateway, has faced several security vulnerabilities that could allow attackers to bypass front-end restrictions or execute malicious scripts . These flaws primarily stem from improper input validation and insufficient sanitization of user-supplied data in the router's web management interface. Key Vulnerabilities and Exploits If you want
Many older or unpatched ZTE devices use predictable default login patterns, such as the username admin paired with a password derived from the serial number (e.g., admin:ZTEGCxxxxxxx ). Failure to change these credentials leaves the device open to unauthorized access via simple brute-force attacks. Impact of Exploitation
Once logged in as admin, an attacker can modify DNS settings (facilitating DNS hijacking), port forwarding rules, and Wi-Fi credentials. They effectively own the gateway.
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