MacOS High Sierra 10.13 supplemental update not installing
Received wisdom seems to be that you need to reinstall the legacy Java v6... which until very recently had become unsupported in macOS.

In October, Apple finally made a version which would install on High Sierra - Download Java for OS X 2017-001

You will possibly need to repeat this process after every System update.

There is an in-depth article on the subject, covering all versions back to CS3 far too long to even start to précis - MacStrategy: Adobe Creative Suite CS and Java RE v6: Information about running Adobe Creative Suite CS on macOS with Adobe's Java Runtime Edition (RE) v6 requirements.

BTW, the supplemental update was to address issues with Adobe CC.
CS has been abandoned for years.