CVE-2014-0322
Microsoft Internet Explorer Use-After-Free Vulnerability
- High 8.8
- Exploited: added to CISA KEV 4 May 2022
- A public exploit reference is listed
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.
Key facts
- Published
- 14 Feb 2014
- Last changed
- 22 Oct 2025
- Assigned by
- microsoft
- KEV added
- 4 May 2022
- KEV fix due
- 25 May 2022
- EPSS
- 85.122% likely to be exploited in the next 30 days, higher than 99.719% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 8.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 14 Feb 2014 Published
- 4 May 2022 CVE-2014-0322 added to CISA KEV
- 4 May 2022 Added to the CISA KEV catalogue