VULNERABILITY INTELLIGENCE

CVE-2020-15684

CVSS score9.8 CRITICAL

EPSS probability1.34%

CISA KEVNot currently listed

Published2020-10-22

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Mozilla developers reported memory safety bugs present in Firefox 81. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 82.

Weakness classification

CWE-416: Use After Free

Primary references

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