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    CVE-2019-11740

    Mozilla developers and community members reported memory safety bugs present in Firefox 68, Firefox ESR 68, and Firefox 60.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

    Published:Sep 3, 2019
    Last Modified:Nov 25, 2025
    EPS:Sep 27, 2019
    EPSS Score:0.015
    CVSS Score:8.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

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    References

    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1563133%2C1573160
    https://security.gentoo.org/glsa/201911-07
    https://usn.ubuntu.com/4150-1/
    https://www.mozilla.org/security/advisories/mfsa2019-25/
    https://www.mozilla.org/security/advisories/mfsa2019-26/
    https://www.mozilla.org/security/advisories/mfsa2019-27/
    https://www.mozilla.org/security/advisories/mfsa2019-29/
    https://www.mozilla.org/security/advisories/mfsa2019-30/
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
    http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1563133%2C1573160
    https://security.gentoo.org/glsa/201911-07
    https://usn.ubuntu.com/4150-1/
    https://www.mozilla.org/security/advisories/mfsa2019-25/
    https://www.mozilla.org/security/advisories/mfsa2019-26/
    https://www.mozilla.org/security/advisories/mfsa2019-27/
    https://www.mozilla.org/security/advisories/mfsa2019-29/
    https://www.mozilla.org/security/advisories/mfsa2019-30/

    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