CVE-2018-12386

Name: CVE-2018-12386
Creator: NVD / NIST
Published: 2018-10-18T13:29:06.273+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 13.42%

Last modified Jun 17, 2026

CVE-2018-12386 is a vulnerability of currently unknown severity. 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. EPSS estimates a 13.42% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

13.42%

95.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-704

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	7.6
Redhat	Enterprise Linux Server Eus	7.5
Redhat	Enterprise Linux Server Eus	7.6
Redhat	Enterprise Linux Server Tus	7.6
Redhat	Enterprise Linux Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Mozilla	Firefox	< 60.2.2
Mozilla	Firefox	< 62.0.3

References

http://www.securityfocus.com/bid/105460Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041770Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2881Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2884Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1493900Exploit, Issue Tracking, Patch, Vendor Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
https://usn.ubuntu.com/3778-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4310Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-24/Vendor Advisory
http://www.securityfocus.com/bid/105460Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041770Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2881Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2884Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1493900Exploit, Issue Tracking, Patch, Vendor Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
https://usn.ubuntu.com/3778-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4310Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-24/Vendor Advisory

Timeline

Published: Oct 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12386?

How severe is CVE-2018-12386?

Severity scoring for CVE-2018-12386 is pending analysis. The EPSS model estimates a 13.42% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12386?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12386?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST