Description: Microsoft has issued a patch for MDAC due to a vulnerability which allows malicious people to cause a buffer overflow.
The problem is that the reply which MDAC receives when it broadcasts a request to identify all systems running SQL Server isn't properly verified. This allows malicious people on the network to send a specially crafted reply which could cause a buffer overflow and possibly lead to execution of arbitrary code on a system running MDAC or SQL Server.
MDAC 2.5, 2.6 and 2.7 is affected.
MDAC is included in Windows XP, Windows 2000 and Windows ME.
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