The Mozilla Foundation has released Firefox 5 and Firefox 3.6.18 to address multiple vulnerabilities. These vulnerabilities may allow an attacker to execute arbitrary code, violate the same origin policy, or perform a cross-site scripting attack.
US-CERT encourages users and administrators to review the Mozilla Foundation Security Advisories for Firefox 5 and Firefox 3.6.18 and apply any necessary updates to help mitigate the risks.