Samsung KNOX 1.0 uses a weak eCryptFS Key generation algorithm, which makes it easier for local users to obtain sensitive information by leveraging knowledge of the TIMA key and a brute-force attack.
Samsung KNOX 1.0.0 uses the shared certificate on Android, which allows local users to conduct man-in-the-middle attacks as demonstrated by installing a certificate and running a VPN service.
ClipboardDataMgr in Samsung KNOX 1.0.0 and 2.3.0 does not properly check the caller, which allows local users to read KNOX clipboard data via a crafted application.