Mozilla Releases Security Updates for Firefox, Firefox ESR, and Thunderbird

Original release date: November 10, 2020

Mozilla has released security updates to address a vulnerability in Firefox, Firefox ESR, and Thunderbird. An attacker could exploit this vulnerability to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Mozilla Security Advisory for Firefox 82.0.3, Firefox ESR 78.4.1, and Thunderbird 78.4.2 and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.



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