CVE-2012-4969

CVE-2012-4969 is a high-severity (CVSS 8.1) vulnerability in Microsoft Internet Explorer. CISA added it to the Known Exploited Vulnerabilities catalog on June 8, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 22, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

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.

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

• 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://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/
• http://technet.microsoft.com/security/advisory/2757760
• http://www.kb.cert.org/vuls/id/480095
• http://www.securitytracker.com/id?1027538
• http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild
• http://www.us-cert.gov/cas/techalerts/TA12-255A.html