Source: https://support.microsoft.com/en-us/help/4592471
Direct download links for KB4592503 (ESU only) MSU file from Microsoft Update Catalog:
:ar: Download KB4592503 MSU for Windows 7 32-bit (x86) - 16.5 MB
:ar: Download KB4592503 MSU for Windows 7 64-bit (x64) - 25.7 MB