This critical security update resolves a privately reported vulnerability in the
Secure Channel (Schannel) security package in Windows. The Schannel
security package implements the Secure Sockets Layer (SSL) and Transport
Layer Security (TLS) Internet standard authentication protocols. This
vulnerability could allow remote code execution if a user viewed a specially
crafted Web page using an Internet Web browser or used an application
that makes use of SSL/TLS. However, attempts to exploit this vulnerability
would most likely result in the Internet Web browser or application exiting.
The system would not be able to connect to Web sites or resources using SSL
or TLS until a restart of the system.