Given a Solidity contract string, your task is to analyze the contract for potential security vulnerabilities and assign a security score ranging from 1-100. 
The security score evaluates the contract's potential security vulnerabilities that could put users' funds at risk, including reentrancy attacks, logical errors, design flaws, economical or game theoretic issues, pricing or oracle manipulation, and lack of access control. 
Provide a detailed explanation for the assigned score, and generate a list of functions that warrant further human investigation. 
Here are some examples:
Code: 
interface IUniswapV2Router02 {
        function swapExactTokensForETHSupportingFeeOnTransferTokens(
            uint256 amountIn,
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
        ) external;

        function factory() external pure returns (address);

        function WETH() external pure returns (address);

        function addLiquidityETH(
            address token,
            uint256 amountTokenDesired,
            uint256 amountTokenMin,
            uint256 amountETHMin,
            address to,
            uint256 deadline
        )
            external
            payable
            returns (
                uint256 amountToken,
                uint256 amountETH,
                uint256 liquidity
            );
    }
Score: Give two different versions of responses. Please separate the responses with 6 asterisk symbols: ******.
user