01 Record

CVE-2012-4969

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

HighKEVPUBLISHEDCNA: mitre

CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 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

03 Exploitation and scoring

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-06-08. Federal remediation due 2022-06-22.

SSVC decision

ExploitationactiveCISA reports credible evidence of active exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

80.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.6% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2012-09-18 10:00Z14 YR AGO

Last updated

2025-10-22 00:05Z1 YR AGO

Reserved

2012-09-18

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant

Data version

5.1

Document digest

2ca8e1852330c83b68b4bc2b5803eedc348e010eae20117bde379c5b070b76bf

05 Affected products

VendorProductVersionsPlatforms

microsoftinternet_explorerNot specified—

microsoftwindows_7Not specified—

microsoftwindows_server_2003Not specified—

microsoftwindows_server_2008Not specified—

microsoftwindows_vistaNot specified—

microsoftwindows_xpNot specified—

06 References

www.us-cert.govTA12-265Ahttp://www.us-cert.gov/cas/techalerts/TA12-265A.htmlthird-party-advisoryx_refsource_CERT
www.kb.cert.orgVU#480095http://www.kb.cert.org/vuls/id/480095third-party-advisoryx_refsource_CERT-VN
oval.cisecurity.orgoval:org.mitre.oval:def:15729https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729vdb-entrysignaturex_refsource_OVAL
www.us-cert.govTA12-262Ahttp://www.us-cert.gov/cas/techalerts/TA12-262A.htmlthird-party-advisoryx_refsource_CERT
www.securityweek.comhttp://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wildx_refsource_MISC
technet.microsoft.comhttp://technet.microsoft.com/security/advisory/2757760x_refsource_CONFIRM
www.us-cert.govTA12-255Ahttp://www.us-cert.gov/cas/techalerts/TA12-255A.htmlthird-party-advisoryx_refsource_CERT
blog.vulnhunt.comhttp://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/x_refsource_MISC
dev.metasploit.comhttp://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rbx_refsource_MISC
www.securitytracker.com1027538http://www.securitytracker.com/id?1027538vdb-entryx_refsource_SECTRACK
eromang.zataz.comhttp://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/x_refsource_MISC
www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969government-resource