Log4j mitigation

The intricacies of Java are over my head, but I’ve been reading about this Log4j issue that sounds pretty bad. What do we know about this? What, if anything, can a network operator do to help mitigate this? Or even an end user? ---- Andy Ringsmuth 5609 Harding Drive Lincoln, NE 68521-5831 (402) 304-0083 andy@andyring.com