CVE-2020-6807

—

CVSS 3.1

8.8 high

EPSS

1%p68

Published

Mar 25, 2020 (Mar 25, 2020)

Modified

Jun 17, 2026

Description

When a device was changed while a stream was about to be destroyed, the stream-reinit task may have been executed after the stream was destroyed, causing a use-after-free and a potentially exploitable crash. 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-416
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.3%)

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