java/android/webkit/BrowserFrame.java in Android before 4.4 uses the addJavascriptInterface API in conjunction with creating an object of the SearchBoxImpl class, which allows attackers to execute arbitrary Java code by leveraging access to the searchBoxJavaBridge_ interface at certain Android API levels.

Lenovo SHAREit before 3.2.0 for Windows and SHAREit before 3.5.48_ww for Android transfer files in cleartext, which allows remote attackers to (1) obtain sensitive information by sniffing the network or (2) conduct man-in-the-middle (MITM) attacks via unspecified vectors.

The Wifi hotspot in Lenovo SHAREit before 3.2.0 for Windows allows remote attackers to obtain sensitive file names via a crafted file request to /list.

The Wifi hotspot in Lenovo SHAREit before 3.2.0 for Windows, when configured to receive files, has a hardcoded password of 12345678, which makes it easier for remote attackers to obtain access by leveraging a position within the WLAN coverage area.

The Wifi hotspot in Lenovo SHAREit before 3.5.48_ww for Android, when configured to receive files, does not require a password, which makes it easier for remote attackers to obtain access by leveraging a position within the WLAN coverage area.

Lenovo SHAREit before 3.5.98_ww on Android before 4.2 allows remote attackers to have unspecified impact via a crafted intent: URL, aka an "intent scheme URL attack."

Cross-site scripting (XSS) vulnerability in Lenovo SHAREit before 3.5.98_ww on Android before 4.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, aka "Universal XSS (UXSS)."