CVE-2016-3387

CVE-2016-3387 is an elevation of privilege vulnerability affecting Microsoft Internet Explorer 10 and 11, and Microsoft Edge, stemming from improper restrictions on private namespaces. This flaw allows remote attackers to gain elevated privileges through unspecified vectors. With a CVSS v3 score of 7.5 (High), successful exploitation requires user interaction and could lead to high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, an exploit (EDB-40607) exists, though there is no evidence of active exploitation or significant community discussion.