CVE-2020-6819 — Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

CISA KEV listed Added November 3, 2021 Remediate by May 3, 2022

Description

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

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2020-6819

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