KrØØk: Serious vulnerability affected encryption of billion+ Wi‑Fi devices ESET Research has published its latest white paper, KrØØk – CVE-2019-15126: Serious vulnerability deep inside your Wi-Fi encryption. This blogpost summarizes that white paper, authored by researchers Milo š Čermák, Robert Lipovský and Štefan Svorenčík. For updated information regarding patches by individual vendors, readers can also refer to our dedicated webpage . ESET researchers discovered a previously unknown vulnerability in Wi-Fi chips and named it KrØØk. This serious flaw, assigned CVE-2019-15126, causes vulnerable devices to use an all-zero encryption key to encrypt part of the user’s communication. In a successful attack, this allows an adversary to decrypt some wireless network packets transmitted by a vulnerable device. KrØØk affects devices with Wi-Fi chips by Broadcom and Cypress that haven’t yet been patched. These are the most common Wi-Fi chips used in contemporary Wi-F...