Vulnerability in the Forefront TMG 2010 Client Could Allow Remote Code Execution
It is extremely rare to see a security update for anything relating to the Forefront TMG firewall. However, the June 2011 security bulletin includes update MS11-040 that addresses a privately reported vulnerability in the Forefront TMG client that could allow remote code execution. This security update applies only to the Forefront TMG client, not the firewall itself. Also, it does not apply to previous versions of the ISA firewall client.
Before applying the MS11-040 update, the latest version of the Forefront TMG client was build 7.0.7734.100. After applying the MS11-040 update, the new build number will be 7.0.7734.182.