The vulnerability of the Thunderbird email client, as well as the Firefox and Firefox ESR browsers, allows a hacker to trigger a service failure or execute arbitrary code.

The vulnerability of the nsHtml5TreeBuilder class in the Thunderbird HTML5 client browser, as well as in Firefox and Firefox ESR browsers, arises due to a loss of precision. Exploiting this vulnerability allows an attacker to execute arbitrary code or cause a service failure disruption of resourc...