CVE-2020-6814

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CVSS 3.1

9.8 critical

EPSS

2%p78

Published

Mar 25, 2020 (Mar 25, 2020)

Modified

Jun 17, 2026

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.

Vendors: mozilla canonical
Products: firefox, firefox esr, thunderbird, ubuntu linux
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.9%)

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