After the new version for Linux we are now also able to announce a fixed version of XAMPP for Windows.
Some vulnerabilities have been reported in OpenSSL, which can be exploited by malicious people to cause a DoS (Denial of Service) and compromise a vulnerable system. To fix this problem we released an upgrade package for the Windows version of XAMPP.
This upgrade is primary for those people who a using XAMPP in a public or semi public environment, like a local network or the Internet.
You can get the upgrade from the here