# CVE-2014-0322: Microsoft Internet Explorer Use-After-Free Vulnerability

> CVE-2014-0322: Microsoft Internet Explorer Use-After-Free Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2014-0322
Last updated: 2025-10-22T00:05:39Z

- Published: 2014-02-14 16:00 UTC · Updated: 2025-10-22 00:05 UTC · Assigner: microsoft
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 85.1%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-05-04, federal due date 2022-05-25, ransomware use: Unknown

## 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft: Internet Explorer

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2014-0322)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2014-0322)
- [http://community.websense.com/blogs/securitylabs/archive/2014/02/13/msie-0-day-exploit-cve-2014-0322-possibly-targeting-french-aerospace-organization.aspx](http://community.websense.com/blogs/securitylabs/archive/2014/02/13/msie-0-day-exploit-cve-2014-0322-possibly-targeting-french-aerospace-organization.aspx)
- [https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012)
- [https://www.dropbox.com/s/pyxjgycmudirbqe/CVE-2014-0322.zip](https://www.dropbox.com/s/pyxjgycmudirbqe/CVE-2014-0322.zip)
- [http://technet.microsoft.com/security/advisory/2934088](http://technet.microsoft.com/security/advisory/2934088)
- [http://twitter.com/nanoc0re/statuses/434251658344673281](http://twitter.com/nanoc0re/statuses/434251658344673281)
- [http://www.exploit-db.com/exploits/32851](http://www.exploit-db.com/exploits/32851)
- [http://www.exploit-db.com/exploits/32904](http://www.exploit-db.com/exploits/32904)
- [http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/new-ie-zero-day-found-in-watering-hole-attack-2.html](http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/new-ie-zero-day-found-in-watering-hole-attack-2.html)
- [http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.html](http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.html)
- [http://www.kb.cert.org/vuls/id/732479](http://www.kb.cert.org/vuls/id/732479)
- [http://www.osvdb.org/103354](http://www.osvdb.org/103354)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2014-0322 · Markdown: https://rewindex.com/cve/CVE-2014-0322.md · JSON: https://rewindex.com/api/v1/cves/CVE-2014-0322 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:56.152Z