Software giant Microsoft has warned that its Windows operating system could be vulnerable to attacks by hackers.
The company announced on its web site that security firm eEye Digital Security had discovered two critical deficiencies in the Windows NT, 2000, XP and Windows Server 2000 systems that required their immediate update.
The faults could be exploited by hackers sending unsolicited data that can damage computer memory, according to the announcement.
eEye Digital Security said the defects were more serious than those exploited by the computer worms Nimda, Code Red and Sapphire.
The deficiencies were first discovered by the company in July 2003, and eEye Digital Security has been working with Microsoft on remedies ever since. The company is recommending using security patches to fix the problem.
