Microsoft Internet Explorer 6 on Windows XP SP2 allows remote attackers to cause a denial of service (crash) by creating a ADODB.Recordset object and making a series of calls to the NextRecordset method with a long string argument, which causes an "invalid memory access" in the SysFreeString function, a different issue than CVE-2006-3510 and CVE-2006-3899.

The Remote Data Service Object (RDS.DataControl) in Microsoft Internet Explorer 6 on Windows 2000 allows remote attackers to cause a denial of service (crash) via a series of operations that result in an invalid length calculation when using SysAllocStringLen, then triggers a buffer over-read.