# CVE-2012-4969: Microsoft Internet Explorer Use-After-Free Vulnerability

> CVE-2012-4969: Microsoft Internet Explorer Use-After-Free Vulnerability. CVSS 8.1 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2012-4969
Last updated: 2025-10-22T00:05:46Z

- Published: 2012-09-18 10:00 UTC · Updated: 2025-10-22 00:05 UTC · Assigner: mitre
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 80.3%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-06-08, federal due date 2022-06-22, ransomware use: Unknown

## Description

Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft Internet Explorer 6 through 9 allows remote attackers to execute arbitrary code via a crafted web site, as exploited in the wild in September 2012.

## 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-2012-4969)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2012-4969)
- [http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day\_en/](http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/)
- [http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie\_execcommand\_uaf.rb](http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb)
- [http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/](http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/)
- [https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729](https://oval.cisecurity.org/repository/search/definition/oval%253Aorg.mitre.oval%253Adef%253A15729)
- [http://technet.microsoft.com/security/advisory/2757760](http://technet.microsoft.com/security/advisory/2757760)
- [http://www.kb.cert.org/vuls/id/480095](http://www.kb.cert.org/vuls/id/480095)
- [http://www.securitytracker.com/id?1027538](http://www.securitytracker.com/id?1027538)
- [http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild](http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild)
- [http://www.us-cert.gov/cas/techalerts/TA12-255A.html](http://www.us-cert.gov/cas/techalerts/TA12-255A.html)
- [http://www.us-cert.gov/cas/techalerts/TA12-262A.html](http://www.us-cert.gov/cas/techalerts/TA12-262A.html)
- [http://www.us-cert.gov/cas/techalerts/TA12-265A.html](http://www.us-cert.gov/cas/techalerts/TA12-265A.html)

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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-2012-4969 · Markdown: https://rewindex.com/cve/CVE-2012-4969.md · JSON: https://rewindex.com/api/v1/cves/CVE-2012-4969 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:01:48.032Z