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    CVE-2009-2462

    The browser engine in Mozilla Firefox before 3.0.12 and Thunderbird allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) the frame chain and synchronous events, (2) a SetMayHaveFrame assertion and nsCSSFrameConstructor::CreateFloatingLetterFrame, (3) nsCSSFrameConstructor::ConstructFrame, (4) the child list and initial reflow, (5) GetLastSpecialSibling, (6) nsFrameManager::GetPrimaryFrameFor and MathML, (7) nsFrame::GetBoxAscent, (8) nsCSSFrameConstructor::AdjustParentFrame, (9) nsDOMOfflineResourceList, and (10) nsContentUtils::ComparePosition.

    Published:Jul 21, 2009
    Last Modified:Apr 23, 2026
    EPS:Jul 22, 2009
    EPSS Score:0.0345
    CVSS Score:10

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-84144 (CVSS 7.5) — Internally found bugs present in Thunderbird 154 and Thunderbird ESR 153.1. Some of these bugs showed evidence…
    CVE-2026-84143 (CVSS 9.8) — Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of th…
    CVE-2026-84142 (CVSS 9.8) — Internally found bugs present in Thunderbird 154. Some of these bugs showed evidence of memory corruption or a…
    CVE-2026-84141 (CVSS 9.8) — Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 155, Firefox ESR…
    CVE-2026-84140 (CVSS 9.8) — Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ES…
    CVE-2026-84139 (CVSS 6.1) — Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.…
    CVE-2026-84138 (CVSS 6.5) — Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155…
    CVE-2026-84137 (CVSS 4.3) — Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153…
    CVE-2026-84136 (CVSS 6.1) — Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, …
    CVE-2026-84135 (CVSS 9.8) — Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.…

    References

    http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00005.html
    http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00002.html
    http://rhn.redhat.com/errata/RHSA-2009-1162.html
    http://rhn.redhat.com/errata/RHSA-2009-1163.html
    http://secunia.com/advisories/35914
    http://secunia.com/advisories/35943
    http://secunia.com/advisories/35944
    http://secunia.com/advisories/35947
    http://secunia.com/advisories/36005
    http://secunia.com/advisories/36145
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-265068-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020800.1-1
    http://www.mozilla.org/security/announce/2009/mfsa2009-34.html
    http://www.redhat.com/support/errata/RHSA-2010-0153.html
    http://www.redhat.com/support/errata/RHSA-2010-0154.html
    http://www.securityfocus.com/bid/35758
    http://www.vupen.com/english/advisories/2009/1972
    http://www.vupen.com/english/advisories/2009/2152
    http://www.vupen.com/english/advisories/2010/0650
    https://bugzilla.mozilla.org/show_bug.cgi?id=413085
    https://bugzilla.mozilla.org/show_bug.cgi?id=442227
    https://bugzilla.mozilla.org/show_bug.cgi?id=445177
    https://bugzilla.mozilla.org/show_bug.cgi?id=461861
    https://bugzilla.mozilla.org/show_bug.cgi?id=463350
    https://bugzilla.mozilla.org/show_bug.cgi?id=466763
    https://bugzilla.mozilla.org/show_bug.cgi?id=468211
    https://bugzilla.mozilla.org/show_bug.cgi?id=472668
    https://bugzilla.mozilla.org/show_bug.cgi?id=472950
    https://bugzilla.mozilla.org/show_bug.cgi?id=491134
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10906
    https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01032.html
    http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00005.html
    http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00002.html
    http://rhn.redhat.com/errata/RHSA-2009-1162.html
    http://rhn.redhat.com/errata/RHSA-2009-1163.html
    http://secunia.com/advisories/35914
    http://secunia.com/advisories/35943
    http://secunia.com/advisories/35944
    http://secunia.com/advisories/35947
    http://secunia.com/advisories/36005
    http://secunia.com/advisories/36145
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-265068-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020800.1-1
    http://www.mozilla.org/security/announce/2009/mfsa2009-34.html
    http://www.redhat.com/support/errata/RHSA-2010-0153.html
    http://www.redhat.com/support/errata/RHSA-2010-0154.html
    http://www.securityfocus.com/bid/35758
    http://www.vupen.com/english/advisories/2009/1972
    http://www.vupen.com/english/advisories/2009/2152
    http://www.vupen.com/english/advisories/2010/0650
    https://bugzilla.mozilla.org/show_bug.cgi?id=413085
    https://bugzilla.mozilla.org/show_bug.cgi?id=442227
    https://bugzilla.mozilla.org/show_bug.cgi?id=445177
    https://bugzilla.mozilla.org/show_bug.cgi?id=461861
    https://bugzilla.mozilla.org/show_bug.cgi?id=463350
    https://bugzilla.mozilla.org/show_bug.cgi?id=466763
    https://bugzilla.mozilla.org/show_bug.cgi?id=468211
    https://bugzilla.mozilla.org/show_bug.cgi?id=472668
    https://bugzilla.mozilla.org/show_bug.cgi?id=472950
    https://bugzilla.mozilla.org/show_bug.cgi?id=491134
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10906
    https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01032.html

    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