Microsoft occasionally releases standalone security updates or patches for the VBA runtime. These can be found on the Official Microsoft Download Center :
You typically do not need to download VBA Core as a separate product, as it is bundled with major software suites. 1. Through Microsoft Office
VBA Core serves as the foundational architecture for the Visual Basic Editor (VBE) and the runtime libraries necessary to execute macro code. Its primary roles include:
It processes the "P-Code" (pseudo-code) used by Office applications like Excel and Word to run automated scripts.