Release Date: February 22, 2022

eTeller Check21 Server Patch: eT_S04_Log4jUpdate


The Check21 Patch eT_S04_Log4jUpdate addresses the Log4j vulnerability identified on the server.

Applies to Check21 Server Versions

  • v7.5.0
  • v7.1.75
  • v6.4.8
  • v6.4.7

Download Request

To request the link for the patch, or if you have questions, complete the online request form. Make sure to reference this patch in your request.