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CVE-2010-0249

HIGH CISA KEV

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."

Published: Jan 15, 2010 Modified: May 21, 2026
CWE-416 CWE-416

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: REQUIRED Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products (5)

Vendor Product Version
microsoft internet_explorer 5.0.1
microsoft internet_explorer 6
microsoft internet_explorer 6
microsoft internet_explorer 7.0
microsoft internet_explorer 8

GitHub Security Advisory GHSA-x2mp-6fmq-52qw

Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000...

Risk Scores

CVSS Score 8.8 / 10
EPSS Score 88.79%

Top 0% most likely to be exploited

Threat Score 91.8 / 100

CISA Known Exploited

Date Added: 2026-05-20
Due Date: 2026-06-03
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.

Data Sources

NVD CISA KEV EPSS GitHub