Vulnerability Intelligence Report
Microsoft Internet Explorer Use-After-Free Vulnerability
CVE-2010-0249
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."
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:91.88%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416 Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| microsoft | internet_explorer | 5.0.1, 6, 7.0, 8 |
| microsoft | windows_2000 | all |
| microsoft | windows_server_2003 | all |
| microsoft | windows_xp | all |
| microsoft | windows_server_2008 | r2 |
| microsoft | windows_vista | all |
| microsoft | windows_7 | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2010-01-07T00:00:00 |
| Published | 2010-01-15T17:00:00 |
| Patch Date | 2010-01-14 |
| Last Updated | 2026-05-21T03:55:30 |
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