Knox Arkeia server 4.2, and possibly other versions, installs its root user with a null password by default, which allows local and remote users to gain privileges.

Knox Arkeia server 4.2, and possibly other versions, uses a constant salt when encrypting passwords using the crypt() function, which makes it easier for an attacker to conduct brute force password guessing.

Arkeia Network Backup Client 5.x contains hard-coded credentials that effectively serve as a back door, which allows remote attackers to access the file system and possibly execute arbitrary commands.