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high8.8Known exploitedPublic exploit code

CVE-2010-0249

Microsoft Internet Explorer Use-After-Free Vulnerability

Exploited in the wild

This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-05-20. Federal due date: 2026-06-03.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

Impact

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.

Affected products

VendorProductAffected versions
MicrosoftInternet Explorer
Versions 5.0.1, 6, 7.0, 8

Weakness classification

References