You might be looking for the release notes , installation guide , or fix list for this specific build (14.3 RU6).

It included patches for several high-priority vulnerabilities that allowed for local privilege escalation.

By the time this version rolled out, the focus was on Endpoint Detection and Response (EDR) . This build improved how the software "talks" to the Symantec Integrated Cyber Defense Manager (ICDM) in the cloud, allowing admins to manage remote workers more effectively without needing a VPN connection back to the local management server. 2. Key Technical Milestones