CVE-2017-7757

CVE-2017-7757 is a critical use-after-free vulnerability in IndexedDB affecting Firefox, Firefox ESR, and Thunderbird versions prior to 54 and 52.2 respectively. This flaw occurs when an IndexedDB object is destroyed while a method is still executing, leading to a potentially exploitable crash. With a CVSS score of 9.8, this vulnerability is easily exploitable over a network with no user interaction, allowing for high impact to confidentiality, integrity, and availability. While there is no known active exploitation or publicly available exploit code in Metasploit or ExploitDB, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.