CVE-2012-4782: Microsoft Internet Explorer

High severity, CVSS 9.3. EPSS: 25.6% chance of exploitation in the next 30 days.

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "CMarkup Use After Free Vulnerability."

Affected products

• Microsoft Internet Explorer: version 9 only; version 10 only

Published 2012-12-12. Last modified 2026-06-16.