The License Manager (mathlm) for Mathematica 4.0 and 4.1 allows remote attackers to bypass access control (specified by the -restrict argument) and steal a license via a client request that includes the name of a host that is allowed to obtain the license.

The License Manager (mathlm) for Mathematica 4.0 and 4.1 allows remote attackers to cause a denial of service (resource exhaustion) by connecting to port 16286 and not disconnecting, which prevents users from making license requests.