Is CVE-2014-0322 being actively exploited?

Yes. CVE-2014-0322 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on May 4, 2022.

What is the CVSS score for CVE-2014-0322?

CVE-2014-0322 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2014-0322

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 85.1%EU EUVD: exploited

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.

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
EPSS score: 85.1% (100th percentile)
In CISA KEV: Yes, added May 4, 2022
In EU EUVD: Yes (EUVD-2014-0360)
Published: February 14, 2014
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Internet Explorer Use-After-Free Vulnerability

Added to the KEV catalog on May 4, 2022; federal remediation due May 25, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-0360 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 22, 2025.

View on the EU Vulnerability Database

Affected products

microsoft / internet explorer
microsoft / internet explorer
microsoft / windows 7
microsoft / windows 8
microsoft / windows rt
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2012
microsoft / windows vista

References

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

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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