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CVE-2012-4969
HIGH
CISA KEV
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.
Published: Sep 18, 2012
Modified: Apr 21, 2026
CWE-416
CWE-416
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (4)
| Vendor | Product | Version |
|---|---|---|
| microsoft | internet_explorer | 6 |
| microsoft | internet_explorer | 7 |
| microsoft | internet_explorer | 8 |
| microsoft | internet_explorer | 9 |
References (23)
- http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/ Broken Link
- http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb Broken Link
- http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/ Third Party Advisory
- http://technet.microsoft.com/security/advisory/2757760 Patch, Vendor Advisory
- http://www.kb.cert.org/vuls/id/480095 Third Party Advisory, US Government Resource
- http://www.securitytracker.com/id?1027538 Third Party Advisory, VDB Entry
- http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild Third Party Advisory
- http://www.us-cert.gov/cas/techalerts/TA12-255A.html Third Party Advisory, US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-262A.html Third Party Advisory, US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-265A.html Third Party Advisory, US Government Resource
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729 Third Party Advisory
- http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/ Broken Link
- http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb Broken Link
- http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/ Third Party Advisory
- http://technet.microsoft.com/security/advisory/2757760 Patch, Vendor Advisory
Risk Scores
CVSS Score
8.1 / 10
EPSS Score
81.72%
Top 0% most likely to be exploited
Threat Score
86.9 / 100
CISA Known Exploited
Date Added:
2022-06-08
Due Date:
2022-06-22
Required Action:
Apply updates per vendor instructions.
Data Sources
NVD
CISA KEV
EPSS