"Gpg4win is prone to a remote denial-of-service vulnerability.
An attacker can exploit this issue to cause an affected application to
crash, denying service to legitimate users. "
This can be exploited by sending a specially crafted GPG message via
email to a user of Gpg4win. It will create a DoS by crashing Gpg4win.
The vendor has not released an update at this time. If you are
experiencing multiple crashes with Gpg4win, inspect the source code of
the email or contact me.