High severity8.1NVD Advisory· Published Oct 18, 2018· Updated Jun 17, 2026

CVE-2018-12386

Description

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

AI Insight

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

Affected products

Mozilla Corporation/Firefoxv54 versions
unspecified+ 3 more
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- (no CPE)range: < 60.2.2
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <60.2.2
osv-coords72 versions
pkg:rpm/suse/mozilla-nspr&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/mozilla-nss&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS
< 4.19-19.3.1+ 71 more
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60.2.2-3.13.3
- (no CPE)range: < 60-4.5.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 4.19-19.3.1
Red Hat/Enterprise Linux Desktop2 versions
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server2 versions
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Aus
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Eus2 versions
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Tus
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Workstation2 versions
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
Debian/linux
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Canonical/Ubuntu Linux3 versions
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*+ 2 more
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

Patches

Vulnerability mechanics

References

bugzilla.mozilla.org/show_bug.cginvdExploitIssue TrackingPatchVendor Advisory
www.securityfocus.com/bid/105460nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1041770nvdThird Party AdvisoryVDB Entry
access.redhat.com/errata/RHSA-2018:2881nvdThird Party Advisory
access.redhat.com/errata/RHSA-2018:2884nvdThird Party Advisory
security.gentoo.org/glsa/201810-01nvdThird Party Advisory
usn.ubuntu.com/3778-1/nvdThird Party Advisory
www.debian.org/security/2018/dsa-4310nvdThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-24/nvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.526
epss	0.011
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000