VULNERABILITY INTELLIGENCE

CVE-2019-9789

CVSS score9.8 CRITICAL

EPSS probability1.21%

CISA KEVNot currently listed

Published2019-04-26

Last modified2026-06-17

CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 65. 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 Firefox < 66.

Weakness classification

CWE-787: Out-of-bounds Write

Primary references

security@mozilla.org — Broken Link, Issue Tracking, Vendor Advisory
security@mozilla.org — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory