CVE-2018-18501

Name: CVE-2018-18501
Creator: NVD / NIST
Published: 2019-02-05T21:29:00.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.47%

Last modified Jun 17, 2026

CVE-2018-18501 is a vulnerability of currently unknown severity. Mozilla developers and community members reported memory safety bugs present in Firefox 64 and Firefox ESR 60.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. EPSS estimates a 3.47% chance of exploitation in the next 30 days.

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 64 and Firefox ESR 60.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

Metrics

EPSS Probability

3.47%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 65.0
Mozilla	Firefox Esr	< 60.5
Mozilla	Thunderbird	< 60.5
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
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	7.6
Redhat	Enterprise Linux Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
http://www.securityfocus.com/bid/106781Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0218Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0219Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0269Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0270Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201903-04Third Party Advisory
https://security.gentoo.org/glsa/201904-07
https://usn.ubuntu.com/3874-1/Third Party Advisory
https://usn.ubuntu.com/3897-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4376Third Party Advisory
https://www.debian.org/security/2019/dsa-4392Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-01/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-02/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-03/Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
http://www.securityfocus.com/bid/106781Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0218Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0219Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0269Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0270Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201903-04Third Party Advisory
https://security.gentoo.org/glsa/201904-07
https://usn.ubuntu.com/3874-1/Third Party Advisory
https://usn.ubuntu.com/3897-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4376Third Party Advisory
https://www.debian.org/security/2019/dsa-4392Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-01/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-02/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-03/Vendor Advisory

Timeline

Published: Feb 5, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-18501?

How severe is CVE-2018-18501?

Severity scoring for CVE-2018-18501 is pending analysis. The EPSS model estimates a 3.47% probability of exploitation in the next 30 days.

How do I fix CVE-2018-18501?

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-2018-18501?

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

Scan your code now

Source: NVD / NIST