CISA known exploited vulnerability

CVE-2020-6820

Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

SOURCE FACT

Mozilla · Firefox and Thunderbird

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.

CISA notes

https://nvd.nist.gov/vuln/detail/CVE-2020-6820

View source evidence →

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CVE-2020-6820

Mozilla · Firefox and Thunderbird

Required action

CISA notes

Could this product be present?