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

Original release date: November 19, 2020<br/><p>Mozilla has released security updates to address vulnerabilities in Firefox, Firefox ESR, and Thunderbird. An attacker could exploit some of these vulnerabilities to take control of an affected system.</p>

<p>The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Mozilla Security Advisories for <a href=”https://www.mozilla.org/en-US/security/advisories/mfsa2020-50″>Firefox 83</a>, <a href=”https://us-cert.cisa.gov https://www.mozilla.org/en-US/security/advisories/mfsa2020-51″>Firefox ESR 78.5</a>, and <a href=”https://www.mozilla.org/en-US/security/advisories/mfsa2020-52″>Thunderbird 78.5</a> and apply the necessary updates.</p>

<div class=”field field–name-body field–type-text-with-summary field–label-hidden field–item”><p class=”privacy-and-terms”>This product is provided subject to this <a href=”https://us-cert.cisa.gov/privacy/notification”>Notification</a> and this <a href=”https://www.dhs.gov/privacy-policy”>Privacy &amp; Use</a> policy.</p>

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