The PHP.net has announced the releases of several new versions in all of the current major series, all correcting several bugs including a CVE-related (security) related to unserialization. This security issue was reported in CVE-2014-8142 and relates to this bug report. It is highly recommended that you upgrade your versions to correct this potential security vulnerability. The latest versions are:
As always, you can download these latest releases directly from the downloads page or http://windows.php.net/download for the Windows users. If you're interested in the other bugs fixed in these releases, check out the full Changelog.