Mozilla has updated its Firefox browser, patching three critical security vulnerabilities.

"Firefox 3.5.6 and 3.0.16 both suffered from memory corruption issues," writes CNET News' Stephen Shankland. "'We presume that with enough effort at least some of these could be exploited to run arbitrary code,' the security advisory said."

"In addition, Firefox 3.5.6 had two critical vulnerabilities in its technology for playing Ogg-format media, one with the liboggplay media library and one with the libtheora video library," Shankland writes.

Click here to read the CNET News story.