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The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-0187.
Use CWE-787, Microsoft vendor hub and Jscript product page to widen CVE-2016-0189 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2015-6136, CVE-2015-6089 and CVE-2015-6056 for nearby disclosures in the same product family. Additional editorial context is available in Weekly Security Roundup: Navigating the April 2026 Threat Landscape and Critical Framework Exploits.