CVE-2012-4969
High 8.1 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Internet Explorer Use-After-Free Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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.
Metrics
- CVSS 3.1
-
8.1 (HIGH)
Score source: NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 80% (percentile: 100) as of 1 November 2026
- CWE
- CWE-416
Affected products
microsoft: internet explorer; microsoft: windows server 2003; microsoft: windows xp; microsoft: windows server 2008; microsoft: windows vista; microsoft: windows 7
References
- http://technet.microsoft.com/security/advisory/2757760 PatchVendor Advisory
- http://technet.microsoft.com/security/advisory/2757760 PatchVendor Advisory
- http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-… Broken Link
- http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/e… Broken Link
- http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/ Third Party Advisory
- http://www.kb.cert.org/vuls/id/480095 Third Party AdvisoryUS Government Resource
- http://www.securitytracker.com/id?1027538 Third Party AdvisoryVDB 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 AdvisoryUS Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-262A.html Third Party AdvisoryUS Government Resource