Vulnerability DatabaseCVE-2016-2821
Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2016-2821
Published:June 13, 2016
Updated:September 21, 2026
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.
Related Resources (14)
http://www.ubuntu.com/usn/USN-2993-1
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html
https://access.redhat.com/errata/RHSA-2016:1217
http://www.mozilla.org/security/announce/2016/mfsa2016-51.html
http://www.securitytracker.com/id/1036057
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-2821
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html
https://security-tracker.debian.org/tracker/CVE-2016-2821
https://bugzilla.mozilla.org/show_bug.cgi?id=1271460
http://www.debian.org/security/2016/dsa-3600
http://www.securityfocus.com/bid/91075
https://access.redhat.com/security/cve/CVE-2016-2821
Do you need more information?
Contact Us
CVSS v4
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
EPSS
Base Score:
3.67