SONY Wireless Headphones WF-1000X, WF-SP700N, WH-1000XM2, WH-1000XM3, WH-CH700N, WH-H900N, WH-XB700, WH-XB900N, WI-1000X, WI-C600N and WI-SP600N with firmware versions prior to 4.5.2 have vulnerability that someone within the Bluetooth range can make the Bluetooth pairing and operate such as changing volume of the product.