CVE-2014-0322

Name: CVE-2014-0322
Creator: NVD / NIST
Published: 2014-02-14T16:55:07.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 85.24%

Last modified Jun 17, 2026

CVE-2014-0322 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 85.24% chance of exploitation in the next 30 days.

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

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

85.24%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 25, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	9
Microsoft	Internet Explorer	10

References

http://community.websense.com/blogs/securitylabs/archive/2014/02/13/msie-0-day-exploit-cve-2014-0322-possibly-targeting-french-aerospace-organization.aspxBroken Link, Permissions Required
http://technet.microsoft.com/security/advisory/2934088Patch, Vendor Advisory
http://twitter.com/nanoc0re/statuses/434251658344673281Press/Media Coverage
http://www.exploit-db.com/exploits/32851Exploit, Third Party Advisory, VDB Entry
http://www.exploit-db.com/exploits/32904Exploit, Third Party Advisory, VDB Entry
http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/new-ie-zero-day-found-in-watering-hole-attack-2.htmlBroken Link
http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.htmlBroken Link
http://www.kb.cert.org/vuls/id/732479Third Party Advisory, US Government Resource
http://www.osvdb.org/103354Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012Patch, Vendor Advisory
https://www.dropbox.com/s/pyxjgycmudirbqe/CVE-2014-0322.zipBroken Link, Exploit
http://community.websense.com/blogs/securitylabs/archive/2014/02/13/msie-0-day-exploit-cve-2014-0322-possibly-targeting-french-aerospace-organization.aspxBroken Link, Permissions Required
http://technet.microsoft.com/security/advisory/2934088Patch, Vendor Advisory
http://twitter.com/nanoc0re/statuses/434251658344673281Press/Media Coverage
http://www.exploit-db.com/exploits/32851Exploit, Third Party Advisory, VDB Entry
http://www.exploit-db.com/exploits/32904Exploit, Third Party Advisory, VDB Entry
http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/new-ie-zero-day-found-in-watering-hole-attack-2.htmlBroken Link
http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.htmlBroken Link
http://www.kb.cert.org/vuls/id/732479Third Party Advisory, US Government Resource
http://www.osvdb.org/103354Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012Patch, Vendor Advisory
https://www.dropbox.com/s/pyxjgycmudirbqe/CVE-2014-0322.zipBroken Link, Exploit
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-0322US Government Resource

Timeline

Published: Feb 14, 2014
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2014-0322?

How severe is CVE-2014-0322?

CVE-2014-0322 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 85.24% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2014-0322?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST