Security Alert (A21-09-05): Multiple Vulnerabilities in Firefox
08 September 2021
Mozilla has published the advisories (MFSA2021-38, MFSA2021-39 and MFSA2021-40) to address multiple vulnerabilities in Firefox browser. A remote attacker could entice a user running a vulnerable browser to visit a web page with specially crafted content to exploit the vulnerabilities.
Firefox ESR Windows versions prior to version 78.14
Firefox ESR Windows versions prior to version 91.1
Firefox Windows versions prior to version 92
Successful exploitation of the vulnerabilities could lead to arbitrary code execution, denial of service or security restriction bypass on an affected system.
Mozilla has released new versions of the product to address the issues and they can be downloaded at the following URLs:
Firefox 92 for Windows https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
Firefox ESR 78.14 and 91.1 for Windows https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr
Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.