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Microsoft Internet Explorer 7 does not properly handle errors during attempted access to deleted objects, which allows remote attackers to execute arbitrary code via a crafted HTML document, related to CFunctionPointer and the appending of document objects, aka "Uninitialized Memory Corruption Vulnerability."
Use CWE-399, Microsoft vendor hub and Internet Explorer product page to widen CVE-2009-0075 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2021-27085, CVE-2021-26411 and CVE-2020-0878 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.