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    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 exploited in the wild in September 2012.

    Published:Sep 18, 2012
    Last Modified:Apr 21, 2026
    EPS:Sep 18, 2012
    EPSS Score:0.91777
    CVSS Score:8.1

    CISA Notification

    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.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Jun 22, 2022
    1542 days ago
    Alert Date
    Jun 8, 2022
    1556 days ago

    Affected Products

    Vendor
    Microsoft
    Product
    Internet Explorer
    Vendor
    Microsoft
    Product
    Windows 7
    Vendor
    Microsoft
    Product
    Windows Server 2003
    Vendor
    Microsoft
    Product
    Windows Server 2008
    Vendor
    Microsoft
    Product
    Windows Vista
    Vendor
    Microsoft
    Product
    Windows Xp

    Exploits

    https://www.exploit-db.com/exploits/21840

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-59295 (CVSS 8.8) — Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over a network…
    CVE-2021-35240 (CVSS 6.5) — A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, be…
    CVE-2021-26419 (CVSS 7.5) — Scripting Engine Memory Corruption Vulnerability…
    CVE-2021-27085 (CVSS 8.8) — Internet Explorer Remote Code Execution Vulnerability…
    CVE-2021-26411 (CVSS 8.8) — Internet Explorer Memory Corruption Vulnerability…
    CVE-2020-17058 (CVSS 7.5) — Microsoft Browser Memory Corruption Vulnerability…
    CVE-2020-17053 (CVSS 7.5) — Internet Explorer Memory Corruption Vulnerability…
    CVE-2020-17052 (CVSS 7.5) — Scripting Engine Memory Corruption Vulnerability…
    CVE-2020-1506 (CVSS 6.1) — <p>An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. A…
    CVE-2020-1012 (CVSS 8.8) — <p>An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. A…

    References

    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
    http://www.us-cert.gov/cas/techalerts/TA12-262A.html
    http://www.us-cert.gov/cas/techalerts/TA12-265A.html
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729
    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
    http://www.us-cert.gov/cas/techalerts/TA12-262A.html
    http://www.us-cert.gov/cas/techalerts/TA12-265A.html
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High