This document provides instructions for installing ArcSight ESM version 5.2 Patch 2. It includes steps for updating the ArcSight Database, ArcSight ESM Manager, ArcSight Console, and ArcSight Web Server components. Details are provided for installation on different platforms. The patch addresses critical issues in ESM v5.2 and provides updates to vulnerability mappings. Users should back up each component before installation and refer to release notes for any usage notes or known issues.