On the same day Mozilla shipped a Firefox update to fix multiple critical vulnerabilities, Opera dropped a major patch to fix three documented flaws, including a memory corruption issue that exposes users to code execution attacks. Patches for these flaws area available in Opera 10.01, and are available in the next version of the Opera version of this article. The vulnerabilities are rated extremely severe and severe on the current version of Opera s software, with the latest version being released on July 1.
Source: https://threatpost.com/code-execution-bug-bites-opera-browser-102809/72869/