Thanks Andrew, Jimmy Daniels & lawtai.
Who is Affected: All customers using the Microsoft® MSN Chat control, which is available for direct download and ships with MSN Messenger and Exchange Instant Messenger.
Impact of vulnerability: Run Code of Attacker's Choice
Maximum Severity Rating: Critical
Affected Software:
- Microsoft MSN Chat Control
- Microsoft MSN Messenger 4.5 and 4.6, which includes the MSN Chat control
- Microsoft Exchange Instant Messenger 4.5 and 4.6, which includes the MSN Chat control
News source: Warp2Search