VYPR
Unrated severityNVD Advisory· Published Nov 21, 2012· Updated Jun 16, 2026

CVE-2012-5840

CVE-2012-5840

Description

Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors, a different vulnerability than CVE-2012-4214.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

30
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <10.0.11
    • (no CPE)range: <17.0
  • cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*range: <2.14
    • (no CPE)range: <2.14
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <17.0
    • cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*range: <10.0.11
    • (no CPE)range: <17.0
  • cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*+ 3 more
    • cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
  • OpenSUSE/openSUSE3 versions
    cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
    • cpe:2.3:o:opensuse:opensuse:12.1:*:*:*:*:*:*:*
    • cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
    • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_eus:6.3:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
    • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
    • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:suse:linux_enterprise_desktop:10:sp4:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:suse:linux_enterprise_desktop:10:sp4:*:*:*:*:*:*
    • cpe:2.3:o:suse:linux_enterprise_desktop:11:sp2:*:*:*:*:*:*
  • cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:*:*:*:*
    • cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:*:-:*:*
    • cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:*:vmware:*:*
  • cpe:2.3:o:suse:linux_enterprise_software_development_kit:10:sp4:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:suse:linux_enterprise_software_development_kit:10:sp4:*:*:*:*:*:*
    • cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp2:*:*:*:*:*:*
  • osv-coords2 versions
    < 50.1.0-1.1+ 1 more
    • (no CPE)range: < 50.1.0-1.1
    • (no CPE)range: < 45.5.1-1.1

Patches

Vulnerability mechanics

References

27

News mentions

0

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