Microsoft has not included Internet Explorer in its Patch Tuesday list, leaving a zero-day vulnerability without a fix.
The flaw could allow hackers to obtain information, or take any action that the user could take on an affected website.
The Redmond giant could be placing the browser at even greater risk, as the controversial hacking contest Pwn2Own is due to start next week.
Both Google and Mozilla have patched their browsers in time for the event, but Microsoft has opted not to.
Websense recently reported flaws in Internet Explorer were targeted as part of a hack on ad firm Unanimis that could have placed tens of thousands of people in danger.
Next week’s Patch Tuesday will be a relatively light one, with just three bulletins, one of which is rated as critical while the other two are rated important.
“The critical update affects Windows XP, Vista and Windows 7 while Windows Sever 2003 and Server 2008 are not affected,” said Amol Sarwate, manager at the Qualys vulnerability research lab.
“One of the important updates affects all Windows operating systems and we expect it to be for the MHTML Information Disclosure issue, which was left un-patched in last month's patch cycle.”
This article originally appeared at itpro.co.uk
Copyright © ITPro, Dennis Publishing
Issue: 324 | February 2014
Access CRN's extensive online resources including; email bulletins, community discussions and unique online news.
Processing registration... Please wait.
This process can take up to a minute to complete.
A confirmation email has been sent to your email address - SUPPLIED GOES EMAIL HERE. Please click on the link in the email to verify your email address. You need to verify your email before you can log on to the CRN website or start posting comments on articles.
If you do not receive your confirmation email within the next few minutes, it may be because the email has been captured by a junk mail filter. Please ensure you add the domain '@crn.com.au' to your white-listed senders.