The CodeWrights HART Device Type Manager (DTM) library in Emerson HART DTM before 1.4.181 allows physically proximate attackers to cause a denial of service (DTM outage and FDT Frame application hang) by transmitting crafted response packets on the 4-20 mA current loop.

CodeWrights HART Comm DTM components, as used with Endress+Hauser FieldCare, allow remote attackers to read arbitrary files, send HTTP requests to intranet servers, or cause a denial of service (CPU and memory consumption) via a longtag XML schema containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.