Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.
https://github.com/advisories/GHSA-7gjv-9m33-chg8
https://github.com/advisories/GHSA-399v-jg88-3gx6
https://github.com/advisories/GHSA-v3xp-3wpq-rvhp
https://github.com/advisories/GHSA-q9x6-7hjh-q9fc
https://github.com/advisories/GHSA-j762-mr2c-fmp9
https://github.com/advisories/GHSA-9pvj-pgg9-pvqq
https://github.com/advisories/GHSA-m8x8-5ch7-c5w9
https://github.com/advisories/GHSA-h9wf-mpvf-9jqg
https://github.com/advisories/GHSA-5j48-826p-2w9r
https://github.com/advisories/GHSA-3cwf-pwcg-57xr
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0840