Smalyshev

**Name of the Vulnerable Software and Affected Versions** PHP versions prior to 5.4.39 PHP versions 5.5.x prior to 5.5.23 PHP versions 5.6.x prior to 5.6.7 **Description** The issue is related to a use-after-free vulnerability in the `process nested data` function. This vulnerability allows remote attackers to execute arbitrary code via a crafted `unserialize` call. The exploitation involves leveraging the use of the `unset` function within an ` wakeup` function. **Recommendations** For PHP versions prior to 5.4.39, update to version 5.4.39 or later. For PHP versions 5.5.x prior to 5.5.23, update to version 5.5.23 or later. For PHP versions 5.6.x prior to 5.6.7, update to version 5.6.7 or later.