Mozilla yesterday confirmed a critical vulnerability in the newest version of Firefox, and said it would plug the hole by the end of the month.
Although the patch won't be added to Firefox before next week's Pwn2Own browser hacking challenge, researchers won't be allowed to use the flaw, according to the contest's organizer.
"The vulnerability was determined to be critical and could result in remote code execution by an attacker," Mozilla acknowledged
in a post to its security blog late Thursday. "The vulnerability has been patched by developers and we are currently undergoing quality assurance testing for the fix."