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    CVE-2012-3973

    The debugger in the developer-tools subsystem in Mozilla Firefox before 15.0, when remote debugging is disabled, does not properly restrict access to the remote-debugging service, which allows remote attackers to execute arbitrary code by leveraging the presence of the HTTPMonitor extension and connecting to that service through the HTTPMonitor port.

    Published:Aug 28, 2012
    Last Modified:Apr 11, 2025
    EPS:Aug 29, 2012
    EPSS Score:0.03046
    CVSS Score:7.6

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html
    http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html
    http://osvdb.org/85005
    http://www.mozilla.org/security/announce/2012/mfsa2012-66.html
    http://www.securityfocus.com/bid/55308
    http://www.ubuntu.com/usn/USN-1548-1
    http://www.ubuntu.com/usn/USN-1548-2
    https://bugzilla.mozilla.org/show_bug.cgi?id=757128
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17039
    http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html
    http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html
    http://osvdb.org/85005
    http://www.mozilla.org/security/announce/2012/mfsa2012-66.html
    http://www.securityfocus.com/bid/55308
    http://www.ubuntu.com/usn/USN-1548-1
    http://www.ubuntu.com/usn/USN-1548-2
    https://bugzilla.mozilla.org/show_bug.cgi?id=757128
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17039

    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