Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized resource identifiers, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted request to a .NET web application, aka ".NET Framework Remote Code Execution Vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-4121
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-057
• http://secunia.com/advisories/60969
• http://www.securityfocus.com/bid/70351
• http://www.securitytracker.com/id/1031021