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    CVE-2016-2821

    Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.

    Published:Jun 8, 2016
    Last Modified:Apr 12, 2025
    EPS:Jun 13, 2016
    EPSS Score:0.02755
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Opensuse
    Product
    Opensuse
    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

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    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html
    http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html
    http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html
    http://www.debian.org/security/2016/dsa-3600
    http://www.mozilla.org/security/announce/2016/mfsa2016-51.html
    http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
    http://www.securityfocus.com/bid/91075
    http://www.securitytracker.com/id/1036057
    http://www.ubuntu.com/usn/USN-2993-1
    https://access.redhat.com/errata/RHSA-2016:1217
    https://bugzilla.mozilla.org/show_bug.cgi?id=1271460
    http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html
    http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html
    http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html
    http://www.debian.org/security/2016/dsa-3600
    http://www.mozilla.org/security/announce/2016/mfsa2016-51.html
    http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
    http://www.securityfocus.com/bid/91075
    http://www.securitytracker.com/id/1036057
    http://www.ubuntu.com/usn/USN-2993-1
    https://access.redhat.com/errata/RHSA-2016:1217
    https://bugzilla.mozilla.org/show_bug.cgi?id=1271460

    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