You are looking for the security patches (SP) for Symantec Security Information Manager 4.8
Symantec releases security patches (SP) for kernel updates and fixes as well as updates for third party products installed on Symantec Security Information Manager 4.8. These patches are independent from other SPs and not incremental. The latest security patch will only contain fixes since the last SP.
Note: All security patches (SPs) are included in the next SSIM Maintenance Pack, Minor or Major release. Please check the README for any security patch, patch or update for minimum requirements.
To download the all available SPs for Symantec Security Information Manager 4.8 please follow the following links: