CVE-2020-6819

Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

Details

CISA date: 2021-11-03
Affected versions: Firefox and Thunderbird
Summary: 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.
Remediation: Apply updates per vendor instructions.
Exploit info: No exploit-tagged NVD references in our cache; see the CISA KEV link below.

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Information is aggregated from multiple authoritative sources for convenience; verify with NVD and vendors before operational decisions.