Buffer overflow in the "RuFSI Utility Class" ActiveX control (aka "RuFSI Registry Information Class"), as used for the Symantec Security Check service, allows remote attackers to execute arbitrary code via a long argument to CompareVersionStrings.

rufsi.dll in Symantec Virus Detection allows remote attackers to cause a denial of service (crash) via a long string to the GetPrivateProfileString function. NOTE: this issue was originally reported as a buffer overflow, but that specific claim is disputed by the vendor, although a crash is acknowledged.