KioWare for Windows (versions all through 8.35) allows to brute force the PIN number, which protects the application from being closed, as there are no mechanisms preventing a user from excessively guessing the number.
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks.
Common protection mechanisms include:
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]