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

Original release date: November 3, 2021Mozilla 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.  CISA encourages users and administrators to review the Mozilla security advisories for Firefox 94, Firefox ESR 91.3, and Thunderbird 91.3. This product is provided subject to this Notification and this Privacy & Use policy.