Autodesk typically provides legacy updates through their Management Portal for subscribers. You can find this specific update by following these steps: Where is the 2018.0.2 download link? - Forums, Autodesk
: Integrated better with modern file management, ensuring that digitally signed AutoLISP files loaded correctly. Technical Requirements for 64-bit Systems
The is a critical update released by Autodesk to improve the stability, security, and performance of AutoCAD 2018 and AutoCAD LT 2018 (64-bit versions). This update fixes issues related to crashes, security vulnerabilities, and functional defects in the initial 2018 release. Key Fixes in 2018.0.2
