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CVE-2020-6820

Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

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.

Recommended action

Apply updates per vendor instructions.

CISA remediation due date for U.S. federal agencies: 3 May 2022.

Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.