{"id":"CVE-2012-4969","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-4969","generatedAt":"2026-10-27T22:04:20.281Z","title":"Microsoft Internet Explorer Use-After-Free Vulnerability","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.","published":"2012-09-18T10:39:14.000Z","lastModified":"2026-06-16T23:45:59.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["microsoft/internet explorer"],"epss":{"score":0.8025,"percentile":0.99616,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.8025,"percentile":0.99609}]},"kev":{"listed":true,"dateAdded":"2022-06-08","dueDate":"2022-06-22","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-4969"},"exploits":{"count":1,"verified":true,"firstPublished":"2012-10-10","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":21840,"kind":"exploit","title":"Microsoft Internet Explorer - execCommand Use-After-Free (MS12-063) (Metasploit)","url":"https://www.exploit-db.com/exploits/21840","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/remote/21840.rb","file":"exploits/windows/remote/21840.rb","published":"2012-10-10","added":"2012-10-10","updated":"2012-10-10","author":"Metasploit","type":"remote","platform":"windows","port":null,"verified":true,"codes":["CVE-2012-4969","OSVDB-85532","MS12-063"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"http://technet.microsoft.com/en-us/security/advisory/2757760"}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 22 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://technet.microsoft.com/security/advisory/2757760","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.kb.cert.org/vuls/id/480095","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id?1027538","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-255A.html","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-262A.html","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-265A.html","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://technet.microsoft.com/security/advisory/2757760","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/480095","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1027538","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-255A.html","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-262A.html","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-265A.html","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-4969","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}