CVE-2012-4969

high-risk
Published 2012-09-18

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.

Do I need to act?

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91.8% chance of exploitation in next 30 days
EPSS score — higher than 8% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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1 public exploit available
21840
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.1/10 High
NETWORK / HIGH complexity

Affected Products (4)

Affected Vendors

Microsoft

References (23)

Broken Link http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-f...
Broken Link http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/ex...
Third Party Advisory http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/
Patch http://technet.microsoft.com/security/advisory/2757760
Third Party Advisory http://www.kb.cert.org/vuls/id/480095
Third Party Advisory http://www.securitytracker.com/id?1027538
Third Party Advisory 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 http://www.us-cert.gov/cas/techalerts/TA12-262A.html
Third Party Advisory http://www.us-cert.gov/cas/techalerts/TA12-265A.html
Third Party Advisory https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3...
Broken Link http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-f...
Broken Link http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/ex...
Third Party Advisory http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/
Patch http://technet.microsoft.com/security/advisory/2757760
Third Party Advisory http://www.kb.cert.org/vuls/id/480095
Third Party Advisory http://www.securitytracker.com/id?1027538
Third Party Advisory 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 http://www.us-cert.gov/cas/techalerts/TA12-262A.html
and 3 more references
68
/ 100
high-risk
Severity 24/34 · High
Exploitability 34/34 · Critical
Exposure 10/34 · Low