CVE-2010-0249highunder attackCWE-416

CVE-2010-0249

Published · Updated

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100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA, has an official Brazilian government alert and has a working public exploit.

ssvc Actcvss 8.8epss 92%
from disclosure to weapon2 days
Published on NVDJan 15
1st PoC+2d
metasploitJan 14
CISA KEV+5969d
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
Action required by CISAfederal deadline: 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.

In short

Internet Explorer has a flaw where it incorrectly handles deleted objects in memory, allowing attackers to run malicious code when you visit a specially crafted webpage. This vulnerability was actively exploited to attack organizations in late 2009.

Technical detail

Use-after-free vulnerability in IE 6–8 on multiple Windows versions where improper object lifecycle management allows remote code execution via crafted HTML. Attack vector is network-based (malicious webpage), requiring user interaction to visit the page; impacts confidentiality, integrity, and availability of the affected system.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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."
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
n/a · n/a
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