CVE-2010-0249
Microsoft Internet Explorer Use-After-Free Vulnerability
Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka "HTML Object Memory Corruption Vulnerability."
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Deadline for federal agencies: 2026-06-03.
4 articles across 3 outlets · first covered May 20, 2026 · latest May 21, 2026
Coverage timeline
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CISA Adds Critical Flaws in Windows, Office, Defender to KEV Listsecurityaffairs.com · May 21, 2026
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CISA Adds CVE-2010-0249 to KEV Catalog, Urging IE Users to Patchwww.cisa.gov · May 20, 2026
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CISA flags decade old IE bug in KEV, orders patch by June 3cisa.gov · May 20, 2026
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CISA adds seven KEV flaws, including 2026 Microsoft Defender bugswww.cisa.gov · May 20, 2026