Microsoft · Internet Explorer
CVE-2014-0322
Microsoft Internet Explorer Use-After-Free Vulnerability
What it is
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: Use-after-free vulnerability in Microsoft Internet Explorer allows remote attackers to execute code.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: May 25, 2022
- Added to the CISA list
- May 4, 2022
- Published
- February 14, 2014
- Severity
- High 8.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 85% in the top 0.3% of all known vulnerabilities
- Weakness
- CWE-416
- More details
- NVD · CVE.org · CISA
All references (11)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012
- http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/new-ie-zero-day-found-in-watering-hole-attack-2.…
- http://www.osvdb.org/103354
- http://www.exploit-db.com/exploits/32851
- http://technet.microsoft.com/security/advisory/2934088
- http://www.kb.cert.org/vuls/id/732479
- http://twitter.com/nanoc0re/statuses/434251658344673281
- http://community.websense.com/blogs/securitylabs/archive/2014/02/13/msie-0-day-exploit-cve-2014-0322-possibly…
- https://www.dropbox.com/s/pyxjgycmudirbqe/CVE-2014-0322.zip
- http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-o…
- http://www.exploit-db.com/exploits/32904
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| May 20, 2026 | Use-After-Free | Internet Explorer | High 8.8 | 92% |
| May 20, 2026 | Use-After-Free | Internet Explorer | High 8.8 | 82% |
| Oct 6, 2025 | Uninitialized Memory Corruption | Internet Explorer | High 8.1 | 97% |
| Aug 12, 2025 | Resource Management Errors | Internet Explorer | High 8.8 | 88% |
| Jul 23, 2024 | Use-After-Free | Internet Explorer | High 8.8 | 79% |
| Mar 30, 2023 | Memory Corruption | Internet Explorer | High 8.8 | 71% |
| Jun 8, 2022 | Use-After-Free | Internet Explorer | High 8.1 | 80% |
| May 25, 2022 | Information Disclosure | Internet Explorer | Medium 6.5 | 50% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.