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Microsoft Internet Explorer 6 through 9, and 10 Consumer Preview, allows remote attackers to bypass Protected Mode or cause a denial of service (memory corruption) by leveraging access to a Low integrity process, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2012.
Use CWE-119, Microsoft vendor hub and Ie product page to widen CVE-2012-1545 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2009-0552, 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.