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Unspecified vulnerability in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 on Windows XP SP2 and SP3, and 6 on Windows Server 2003 SP1 and SP2 allows remote attackers to execute arbitrary code via a web page that triggers presence of an object in memory that was (1) not properly initialized or (2) deleted, aka "Uninitialized Memory Corruption Vulnerability."
Use CWE-94, Microsoft vendor hub and Ie product page to widen CVE-2009-0552 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2012-1545, CVE-2009-2069 and CVE-2009-2057 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.