The distributed computing vendor patched the flaw, affecting Citrix ADC and Gateway, along with another flaw impacting availability for SD-WAN appliances.
https://threatpost.com/critical-citrix-bug-etwork-cloud-app-access/176183/
The fix doesn’t cover the entire problem nor all affected systems however, so the company also is offering workarounds and plans to release further remedies at a later date.
https://threatpost.com/microsoft-emergency-patch-printnightmare/167578/