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CVE-2020-6820

KEV

Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

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Vendor / Project
Mozilla
Product
Firefox and Thunderbird
Date added
Nov 3, 2021
Due date
May 3, 2022
Known ransomware use
Unknown
CWEs
CWE-362

Description

Mozilla Firefox and Thunderbird contain a race condition vulnerability when handling a ReadableStream under certain conditions. The race condition creates a use-after-free vulnerability, causing unspecified impacts.

Required action

Apply updates per vendor instructions.

Notes