Security Alert (A21-02-09): Multiple vulnerabilities in Firefox
24 February 2021
Mozilla has published the advisories (MFSA 2021-07 and MFSA 2021-08) 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 78.8
Firefox Windows versions prior to version 86
Successful exploitation of the vulnerability could lead to arbitrary code execution information disclosure, and security feature 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 86 for Windows https://www.mozilla.org/en-US/firefox/all/
Firefox ESR 78.8 for Windows https://www.mozilla.org/en-US/firefox/organizations/all/
Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.