Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
From VID-10FD731C-8088-11E9-B6AE-001871EC5271:
Cyrus IMAP 3.0.10 Release Notes states:
Fixed CVE-2019-11356: buffer overrun in httpd
With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.
– Scott Cheney, Manager of Information Security, Sierra View Medical Center