CVE-2012-4969

microsoft internet explorer

Published 18 Sept 2012 · updated 16 Jun 2026 · Analyzed

8.1 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 8 Jun 2022, with a remediation deadline of 22 Jun 2022 for US federal agencies.

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.

References

blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/ · Broken Link
dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb · Broken Link
eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/ · Third Party Advisory
technet.microsoft.com/security/advisory/2757760 · Patch, Vendor Advisory
www.kb.cert.org/vuls/id/480095 · Third Party Advisory, US Government Resource
www.securitytracker.com/id?1027538 · Third Party Advisory, VDB Entry
www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild · Third Party Advisory
www.us-cert.gov/cas/techalerts/TA12-255A.html · Third Party Advisory, US Government Resource
www.us-cert.gov/cas/techalerts/TA12-262A.html · Third Party Advisory, US Government Resource
www.us-cert.gov/cas/techalerts/TA12-265A.html · Third Party Advisory, US Government Resource
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729 · Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969 · US Government Resource