CVE-2010-0249

Undergoing Analysis
Published: 15 Jan 2010, 17:00
Last modified:21 May 2026, 03:55

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.3 HIGH
v2.0 (nvd)
EPSS Score
90.06% CRITICAL
90% probability -0.85%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
4 found
Dark Web
Not detected

Timeline

15 Jan 2010, 17:00
Published
Vulnerability first disclosed
20 May 2026, 00:00
Added to CISA KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
21 May 2026, 03:55
Last Modified
Vulnerability information updated
03 Jun 2026, 00:00
CISA Remediation Due
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Description

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 Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 90.06%• Percentile: 100%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • microsoft•internet_explorer

    5.0.1:sp4 | 6:sp1 | 6 | 7.0 | 8

References (15)