According to the software maker, the patch does not address the underlying problem effectively and will still allow a hacker to plant malicious code in a Windows 2000 system running Media Services.

Microsoft said in a blog post the company was not aware of any attacks trying to exploit the flaw, and expected to release a replacement patch this week.

Until a new patch is released, Microsoft advised customers using Media Services to use firewall best practices to limit the risk of attack.

This article was first published in Computer Weekly