Buffer overflow in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .fon file, aka "Font Library File Buffer Overrun Vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-2003
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13103
• http://securityreason.com/securityalert/8473
• http://www.securitytracker.com/id?1026165