CVE-2020-6826

Mozilla: Memory safety bugs fixed in Firefox 75

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Severity

Important

Red Hat Product Security

9.8

CVSS 3.1

Review impact separately from score.

Published · April 10, 2020

Updated · November 22, 2025

Description

Mozilla developers Tyson Smith, Bob Clary, and Alexandru Michis reported memory safety bugs present in Firefox 74. 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 < 75.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer