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Microsoft CVE-2014-0322

HIGH
Use After Free (CWE-416)
2014-02-14 secure@microsoft.com
8.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

6
Re-analysis Queued
Apr 21, 2026 - 15:22 vuln.today
cvss_changed
Analysis Generated
Mar 26, 2026 - 11:18 vuln.today
Added to CISA KEV
Oct 22, 2025 - 01:15 cisa
CISA KEV
PoC Detected
Oct 22, 2025 - 01:15 vuln.today
Public exploit code
Patch released
Oct 22, 2025 - 01:15 nvd
Patch available
CVE Published
Feb 14, 2014 - 16:55 nvd
HIGH 8.8

DescriptionNVD

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.

AnalysisAI

Internet Explorer 9 and 10 contain a use-after-free vulnerability in CMarkup object handling exploitable via crafted JavaScript, used in 'Operation SnowMan' watering hole attacks targeting US military and defense in early 2014.

Technical ContextAI

The CWE-416 use-after-free is triggered through a sequence of JavaScript operations involving CMarkup objects and onpropertychange event handlers. By creating and destroying DOM elements in a specific pattern, the attacker causes a CMarkup object to be freed while still referenced, then uses heap spray to control the freed memory.

RemediationAI

Migrate to modern browsers. Apply Microsoft security update MS14-012. This was a key driver in the industry's push to deprecate legacy IE versions.

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CVE-2014-0322 vulnerability details – vuln.today

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