CVE-2020-6814

CRITICAL

Firefox < 74.0 and Firefox ESR < 68.6.0 - Out-of-bounds Write

Title source: llm
STIX 2.1

Description

Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68.5. 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 Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.

References (6)

Core 6
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4328-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4335-1/

Scores

CVSS v3 9.8
EPSS 0.0084
EPSS Percentile 74.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (6)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
mozilla/firefox < 74.0
mozilla/firefox_esr < 68.6.0
mozilla/thunderbird < 68.6.0
Published Mar 25, 2020
Tracked Since Feb 18, 2026