Stack-based buffer overflow in the CComVariant::ReadFromStream function in the Active Template Library (ATL), as used in the MPEG2TuneRequest ActiveX control in msvidctl.dll in DirectShow, in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote attackers to execute arbitrary code via a crafted web page, as exploited in the wild in July 2009, aka "Microsoft Video ActiveX Control Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7436
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6363
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6333
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-037
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-032
http://www.vupen.com/english/advisories/2009/2232
http://www.us-cert.gov/cas/techalerts/TA09-223A.html
http://www.us-cert.gov/cas/techalerts/TA09-195A.html
http://www.us-cert.gov/cas/techalerts/TA09-187A.html
http://www.securitytracker.com/id?1022514
http://www.securityfocus.com/bid/35585
http://www.securityfocus.com/bid/35558
http://www.microsoft.com/technet/security/advisory/972890.mspx
http://www.kb.cert.org/vuls/id/180513