Use-after-free vulnerability in Firefox, Firefox ESR, and Thunderbird allows for potentially exploitable crashes

CVE-2017-7749 · HIGH Severity

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

A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. 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.