Affected: zte zxhn_z500_firmware, zte zxhn_e500_firmware, zte zxhn_h108n_firmware, zte zxhn_e2615_firmware, zte zxhn_e2603_firmware, zte zxhn_e2618_firmware, zte zxhn_e1600_firmware, zte zxhn_h338a_firmware, zte zxhn_h168n_firmware, zte zxhn_h168a_firmware

The HTTPD binary in multiple ZTE routers has a stack-based buffer overflow vulnerability in rsa_decrypt function. This function is an API wrapper for LUA to decrypt RSA encrypted ciphertext, the decrypted data is stored on the stack without checking its length. An authenticated attacker can get RCE as root by exploiting this vulnerability.