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TI-2016-02363 Aliases CVE-2016-2821GHSA-6f24-v3m3-vf5g

Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before…

Priority LOW 38Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.02771 86th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*up to 46.0.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:*45.1.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*45.1.1VulnerableMozilla
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*42.1VulnerableopenSUSE
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*13.1VulnerableopenSUSE
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*13.2VulnerableopenSUSE
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*15.10VulnerableCanonical
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions up to 46.0.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:* Versions 45.1.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:* Versions 45.1.1 Vulnerable ·Mozilla
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* Versions 42.1 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* Versions 13.1 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* Versions 13.2 Vulnerable ·openSUSE
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical

Remediation

Red Hat 1 advisory

  • RHSA-2016:1217 Released 2016-06-08 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux (v. 5 server) firefox-45.2.0-1.el5_11, firefox-45.2.0-1.el5_11.i386
    • Red Hat Enterprise Linux Client (v. 7) firefox-45.2.0-1.el7_2
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-45.2.0-1.el7_2
    • Red Hat Enterprise Linux Desktop (v. 5 client) firefox-45.2.0-1.el5_11, firefox-45.2.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-45.2.0-1.el6_8
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-45.2.0-1.el6_8
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-45.2.0-1.el6_8
    • Red Hat Enterprise Linux Server (v. 6) firefox-45.2.0-1.el6_8
    • Red Hat Enterprise Linux Server (v. 7) firefox-45.2.0-1.el7_2
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-45.2.0-1.el6_8, firefox-45.2.0-1.el6_8.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-45.2.0-1.el7_2, firefox-45.2.0-1.el7_2.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-45.2.0-1.el6_8
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-45.2.0-1.el7_2
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-45.2.0-1.el6_8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-45.2.0-1.el7_2

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:1217
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1217
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-2821
  2. 2026-10-03 Alias added: GHSA-6f24-v3m3-vf5g

References

Advisory 7

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences