An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge, aka 'Scripting Engine Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0990.
https://www.tenable.com/blog/tenable-roundup-for-microsofts-june-2019-patch-tuesday
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1023