Get it here Who should read this bulletin: Customers using Microsoft® Windows Media™ Player 6.4, 7.1 or Windows Media Player for Windows XP. Impact of vulnerability: Three new vulnerabilities, the most serious of which could be used to run code of attacker's choice. Maximum Severity Rating: Critical Recommendation: Customers running affected products should apply the patch immediately. Affected Software: Microsoft Windows Media Player 6.4 Microsoft Windows Media Player 7.1 Microsoft Windows Media Player for Windows XP