Use-after-free vulnerability in video control operations with <track> element in Firefox and Thunderbird

CVE-2017-7750 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

A use-after-free vulnerability during video control operations when a "<track>" element holds a reference to an older window if that window has been replaced in the DOM. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Learn more about our Web Application Penetration Testing UK.