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Vulnerabilities

Vulnerability · CVE-2014-0322

Microsoft Internet Explorer Use-After-Free Vulnerability

Published Feb 14, 2014 · catalog updated Jun 16, 2026 · Microsoft Internet Explorer

Patch now

CVE-2014-0322 is in the CISA known-exploited catalog, due May 25, 2022. Confirm Microsoft Internet Explorer against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
85.12%
Remediation
Remediation guidance
Affected products
cpe microsoft/internet explorer · vendor Microsoft Internet Explorer · vendor n/a n/a

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/internet explorer10
  • cpe microsoft/internet explorer9
  • vendor Microsoft Internet Explorerversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2014-0322

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2014-0322 is in the CISA known-exploited catalog, due May 25, 2022. Confirm Microsoft Internet Explorer against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/internet explorer 10; microsoft/internet explorer 9. Apply updates per vendor instructions.

What should an analyst verify?

CWE-416: Use After Free. EPSS 85.12%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 14, 2014 · Catalog

    Detected

    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.

  2. May 4, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 25, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2014-0322

    Use-after-free vulnerability in Microsoft Internet Explorer allows remote attackers to execute code.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2014-0322

    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

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2014-0322

    30-day exploitation probability 85.1%

    first.org
  • Exploit DatabasePublic exploit reference32851

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference32904

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_windows/browser/ms14_012_cmarkup_uaf

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2014-0322

    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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2014-0322

    Use-after-free vulnerability in Microsoft Internet Explorer allows remote attackers to execute code.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.