Microsoft has issued a workaround to resolve a glitch in a recently released cumulative Internet Explorer 6 (IE6) patch that can cause the popular browser to crash.
The software giant admitted late Tuesday to "possible problems on systems that have installed" the fix, MS07-069, considered by experts to be the most pressing patch to come out of this month's security release. The affected computers are those running Windows XP Service Pack 2.
On Wednesday, Microsoft released a support document that offers users a nine-step registry-edit workaround to correct the glitch.
Kieron Shorrock, program manager for IE inside the Microsoft Security Response Center, said the company has been working with a small number of customers on the issue.
Some experts questioned why Microsoft chose not to release a new patch.
"This is a large-scale issue because IE6 is the most popular version of the browser," said Paul Zimski, senior director of market strategy at Lumension Security, a security management firm. "Microsoft has yet to issue a fix and its temporary workaround does not guarantee to correct the problem."
Mark Miller, Microsoft's director of security response, told SCMagazineUS.com today in an email that the software company may issue a hotfix so customers will have no problems applying the workaround.
The original IE patch plugged four holes in the browser, garnering an "extremely critical" label from vulnerability tracking firm Secunia. Since the patch was released, attackers began actively exploiting the flaws, Secunia said.