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CVE-2014-0322

High 8.8 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Microsoft Internet Explorer Use-After-Free Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply updates per vendor instructions.

Description

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via vectors involving crafted JavaScript code, CMarkup, and the onpropertychange attribute of a script element, as exploited in the wild in January and February 2014.

Metrics

CVSS 3.1
8.8 (HIGH) Score source: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS — exploit probability
85% (percentile: 100) as of 1 November 2026
CWE
CWE-416

Affected products

microsoft: internet explorer; microsoft: windows 7; microsoft: windows server 2008; microsoft: windows vista; microsoft: windows 8; microsoft: windows rt; microsoft: windows server 2012

References