Critical Vulnerability Information 1. Vulnerability Overview 2. Exploitation Path Command Injection: - In upload.cgi, line 8: reads input without filtering special characters. These characters are concatenated with strings and passed to on line 11, leading to a command injection vulnerability. Buffer Overflow: - In upload.cgi, line 8: limits input to 512 bytes. However, on line 10: concatenates with a 29-byte constant prefix. If the content of /proc/version exceeds 481 bytes, a stack buffer overflow is triggered. 3. Vulnerable Binary File upload.cgi 4. 0-day Exploitation Path 5. Proof of Concept (PoC) for Vulnerability Reproduction Simulate Malicious Firmware Version (Command Injection) Simulate Overlong Firmware Version (Buffer Overflow)