CVE-2010-0249: Microsoft Internet Explorer Use-After-Free Vulnerability

Added to the CISA Known Exploited Vulnerabilities catalog on 03 Jun 2026. Vendor: Microsoft. Product: Internet Explorer.

Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due 03 Jun 2026)