Mozilla Thunderbird: Mozilla developers and community members reported memory safety bugs present in Firefox…

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

• CISA KEV Not listed.
• EPSS 0.034, the 88th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 5 Feb 2019. New records show when each source confirmed them.

Sources

• CVE List: CVE-2018-18501
• NVD: CVE-2018-18501

References from the CNA

• access.redhat.com/errata/RHSA-2019:0219 vendor-advisoryredhat
• www.mozilla.org/security/advisories/mfsa2019-01/ confirm
• usn.ubuntu.com/3897-1/ vendor-advisoryubuntu
• www.securityfocus.com/bid/106781 vdb-entrybid
• security.gentoo.org/glsa/201903-04 vendor-advisorygentoo
• usn.ubuntu.com/3874-1/ vendor-advisoryubuntu
• access.redhat.com/errata/RHSA-2019:0269 vendor-advisoryredhat
• access.redhat.com/errata/RHSA-2019:0218 vendor-advisoryredhat
• www.mozilla.org/security/advisories/mfsa2019-02/ confirm
• www.debian.org/security/2019/dsa-4376 vendor-advisorydebian
• lists.debian.org/debian-lts-announce/2019/02/msg00024.html mailing-listmlist
• lists.debian.org/debian-lts-announce/2019/01/msg00025.html mailing-listmlist
• www.mozilla.org/security/advisories/mfsa2019-03/ confirm
• www.debian.org/security/2019/dsa-4392 vendor-advisorydebian
• access.redhat.com/errata/RHSA-2019:0270 vendor-advisoryredhat
• security.gentoo.org/glsa/201904-07 vendor-advisorygentoo
• lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html vendor-advisorysuse

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.