Overview:
A buffer overflow vulnerability exists in Microsoft's Remote Procedure Call (RPC) implementation. A remote attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service. An exploit for this vulnerability is publicly available.

A buffer overflow has been discovered in Microsoft's RPC implementation. Quoting from Microsoft Security Bulletin MS03-026.

For further technical information about this vulnerability, please see Microsoft Security Bulletin MS03-026.

Impact
A remote attacker could exploit this vulnerability to execute arbitrary code with System Privileges or cause a denial of service.

Solution
Apply Patch
Windows NT 4.0 Server (Recommended for Normal Users)
Windows NT 4.0 Terminal Server Edition
Windows 2000 & Windows Professional
Windows XP 32 bit Edition (Recommended for Normal Users)
Windows Server 2003 32 bit Edition (Recommended for Normal Users)
W32.Blaster.Worm Removal Tool "FixBlast.exe"
W32.Welchia.Worm Removal Tool "FixWelch.exe"

Install this software it will check system either they are patch or not. Click here.