CVE-2014-0322highunder attackCWE-416

CVE-2014-0322

Published · Updated

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100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA, has a working public exploit and 1 threat group(s) use it.

ssvc Actcvss 8.8epss 85%
from disclosure to weapon59 days
Published on NVDFeb 14
1st PoC+59d
metasploitFeb 13
CISA KEV+3001d
Who exploits it — 1

Groups known to exploit this vulnerability (MITRE ATT&CK attribution).

APT / StateAxiom🇨🇳 MITRE ATT&CK
Action required by CISAfederal deadline: 2022-05-25

Apply updates per vendor instructions.

In short

Internet Explorer 9 and 10 have a bug where freed memory can be reused, allowing hackers to run malicious code through specially crafted JavaScript. This was actively exploited by attackers in early 2014.

Technical detail

Use-after-free vulnerability in IE 9/10's CMarkup implementation triggered via crafted JavaScript exploiting the onpropertychange event handler on script elements. Attack vector is remote (malicious web page), requires user to visit the site; impact is arbitrary code execution in the browser context.

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 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.
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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